science-help

[novel basin]

Oh you just want the formula?

[willow gale]

At the moment yes

[novel basin]

I'd use Square root of 4 pi squared multiplied by r cubed (r bring distance from central mass of the object to the orbitting mass) divided by the constant (G) and the mass M of the central object (the sun in this case)

[willow gale]

Ok thanks

[willow gale]

Then the answer is in second right?

[novel basin]

Here's the derivation if that helps

The answer should be in SI I think so yeah

[willow gale]

Ok thank you very much

[novel basin]

👍

[willow gale]

Ur so kind

[pure cypress]

hi guys, I have a question. The problem request me the work that an external agent must do to make a loop rotate within a magnetic field, but I get the negative answer, it is okay?

sorry for my english

[novel basin]

What do you mean by the negative answer

[pure cypress]

the work

[novel basin]

Ah, yeah I think it' fine

[pure cypress]

But what does it mean that it turns out like this? because it starts with zero speed ...

[novel basin]

I'm not too sure, what is the question asking exactly?

[pure cypress]

"u" is the magnetic dipole moment, it is a circular loop and they give me the current intensity. The loop goes from left to right

[near copper]

Any programmers here? Super road blocked on a Data Structures Proj

[low garden]

#tech-related-help perhaps?

[near copper]

thx

there should really be a programming channel ig

[snow snow]

anyone got a clue to prove this theorem ? If P is a (nonconstant) polynomial with complex coefficients, all zeros of P′ belong to the convex hull of the set of zeros of P.

[covert finch]

Anyone could solve this? I think its 1 and 4 but there are a lot of different answers online for it

[toxic geode]

In my opinion only the V is correct, but i'm not sure

i would say the f is the correct answer

[pure cypress]

I think it is the "f", that the voltage decreases in the dielectric does not mean that also in the whole circuit ... Anyone who can confirm me?

[ancient knoll]

Hi, does someone know why carbon monoxide can bind ~200 times stronger to hemoglobin than dioxygen?

[rapid oar]

If we think about the circuit in the steady-state I think you are right 1-4 are the correct options. However, if it is for the moment just after the insertion, I would say 2-3-5.

[weak thorn]

i'm not entirely sure but could it be because hemoglobin contains an Fe ion?

and plus dioxygen is nonpolar (assuming that you're talking about diatomic oxygen)

[formal phoenix]

I love science

[proud lantern]

i think it has to do with orbital interactions between Fe and CO! i don't think schools (including medical school) ask you to know the details about the interactions, just that CO binds to hemoglobin (hgb) way better than O2 does --> CO saturates hgb in the bloodstream and it won't let go --> not enough O2 is delivered to your tissues --> CO poisoning

[weak thorn]

yesss I was right

[autumn shore]

That's a really weird question, I have never saw something like that.
For what I understand "a dielectric material is inserted between the plates of the capacitor" means that the capacitance increase.
To be honest, I don't really know what should happen, because for me, increasing the capacitance with a continuous voltage source will not do anything.

The II and the V is the same thing

III and IV are mutually exclusive

[vague oriole]

im quite sure its b

[versed vortex]

When you insert a dialectric between a capacitor, the dialectric material will be polarized, and the overall E field of between the capacitor plates will decrease, allowing more charge to build up so the answer has to atleast include #1

Well actually based on how its word it says "the charge WILL increase" and i'm not sure that's the case, the dialectric just ALLOWS more charge to be stored...

The potential across the capacitor plates would def decrease as well.

I want to say its e

[versed vortex]

What are you stuck on?

[dry sluice]

Hi does anyone know any good videos that go over protein sorting and vesicles for biology. I’m kinda stuck on it

[shrewd musk]

is potential 0 at infinity?

[shrewd musk]

yess

tysmm 😊

[thorny gyro]

0 potential is arbitrary, It is generally taken as 0 at Infinity but when the potential source itself extends to infinity, it is better to define some other point as 0 potential. Potential difference is the quantity that matters.

[shrewd musk]

oh ok thx!!! 😊

[young fractal]

hey so i skipped derivation and integration in physics last yr, school was online. Final yr now and regretting it badly coz its legit everywhere in physics any tips to learn them, any sources online?

[glass crest]

I have a question related to single phase transformer, can i ask?

This for just a reference

The example there, i think they are wrong

They used source emf where induced emf was expected. Im just learning this, so i could be wrong

[terse juniper]

Which quest u talking about?

[twilit rampart]

Can some please provide me with PDF of Vikas Gupta Coordinate Geometry for JEE? Please help.

[queen river]

Ap learn basics from khan academy

@young fractal learn basics of calculus from khan academy and practice

[cosmic meadow]

I remember seeing this question in griffiths. It is just an integral problem. This kind of problems are solved as a combination of simpler problems so a proper introduction is required. For example in this case both problems are a combination of circle and line. Anyway I suggest you check section 2 of Griffiths introduction to electrodynamics

Study this simple cases then apply them to your question. For example a-) is a quadrant circle (so 1/4 of solution to problem 2.5) + two lines (so 2 times the solution to problem 2.3) Most problems can be solved by combining this simple ones.

[cosmic meadow]

You are welcome

[ancient knoll]

Thank you for your answer. CO probably has a higher polarity than O2 (difference in electronegativity: ~0.9 vs 0), but since the molecule has to exist in the contributing structure where the carbon atom has a negative charge in order to create a coordinate covalent bond to the Fe ion, I don't think the polarity has an effect on the stability of the coordination complex. However, I think I've read somewhere that the thermodynamic stability is dependent on the electronegativity as well as the charge of the atom which provides its lone electron pair to the bond. Since carbon has a lower electronegativity than oxygen and the carbon atom of CO is neutral when bound to the Fe ion in hemoglobin (while the oxygen atom has a positive charge in this coordination complex), it's probably a more stable bond. But I wasn't able to find any proof for this on the internet.
http://www.chemgapedia.de/vsengine/media/vsc/de/ch/8/bc/proteine/funktion_v_prot/sauerstofftransport/flash2/haemoglob2_02.png
Btw, I am German and don't really know the English terminology for chemistry, but I hope it's still understandable.

[ancient knoll]

Thank you for your answer, I just had coordination complexes in school and asked myself this question, but even my teacher (who has a Ph.D. in chemistry) wasn't able to answer this. Since there are so many people on this server, I thought maybe someone would know the answer.

[unreal ridge]

What happens when we mix a solution of higher molarity to one with comparatively lower molarity ?

[willow gale]

is this chem?

[sour basalt]

then you get a molarity mixed with two solutions

[unreal ridge]

Please elaborate

[willow gale]

is this chem tho?

[unreal ridge]

Yes

[willow gale]

oh srry... i cant help, im about to take it next year

[unreal ridge]

To be specific... the two solutions are the same just with different molarities

[unreal ridge]

ohk np

[willow gale]

did you take physics yet?

[dusk tree]

Do you know the volumes?

[swift hatch]

What do you exactly want to know ? The final concentration ?

[unreal ridge]

The molarity of the final solution

How will it be affected

[dusk tree]

In order to calculate final solution you need volumes i think (m1v1+m2v2)/(v1+v2)

[hollow fiber]

I have a question regarding the bond theory of conductors, semiconductor and insulators.
In conductor, does the valence shell overlap with other surrounding molecule's valence shell?
And in semiconductor the valence shells are seperated and only when heated then the electrons can be in conduction band.
Am i right?

[unreal ridge]

oh

I will check TY

[dusk tree]

Np

[swift hatch]

For the semi-conductors the heat is making the electrons pass from the valence band to the conduction band so yes 🙂

I'm not sure I'm understanding the first question haha

Also, when you say the semiconductor needs to be heated, the material needs to be at a temperature higher than 0 K

[hollow fiber]

I do get that the electron goes from one band to other when energy is applied in case of semiconductors and the bands overlap in case of conductors but I can't understand how the atoms and their electrons stays in these so called bands and how they relate with other atoms

I want to know the molecular structure in these bands

[daring isle]

Mornin' , guys 🙂

I have a question about transistors :(.
Is there a difference for a transistor to be saturated and velocity-saturated? For me, its just the same but some expressions are a little different with each other.

[swift hatch]

Oh ok so: there are different types of semiconductors, the intrinsic (they have no impurities) and the extrinsic which (type n and p) with impurities.
The main idea is that there are atoms with a lack of electrons so their valence gap contains a hole, the surrounding atoms have all of their electrons so when the temperature is higher then 0 K, one of the electron from the atom having all of his electrons can "jump" on the valence bond of the atom with a lack of electron

[swift hatch]

Hope it answers your question

also sorry about my english 😅

[hollow fiber]

@swift hatch actually I got my question a bit messed up there. Let me rephrase what I want to know, are the valence orbitals in conductors overlapping with each other and valence orbitals in insulators far away from each other?
Most likely not since if that was the case and the valence orbital was far, the molecule will become gas(probably).

[rapid oar]

I believe it is not about the distance between the valance orbitals but the tendency to excite an electron from valance to be free.

[swift hatch]

For insulators, the energy gap between the orbital full of electrons and the next orbital is too high

[boreal adder]

Do u know anything about Cellular mechanisms of liver regeneration

[zealous tree]

maybe google iopac nomenclature

[brazen kindle]

Could someone help me with this? its about thermodynamics

"In a recipient made from a material with expansion and compressibility coefficient = 0, was completly filled with 20kg of water at 40ºC with a pressure of 1atm.
Let water's density = 998.5kg/m^3, expansion coeff. = 4,56*10^-4 K^-1 and compressibility coeff. = 4.4 * 10^-10 Pa^-1

c) at 93ªC, the volume increased by 0,05%. What is the water pressure?" answer: 536 atm

for some reason im only getting negative pressure and i dont understand if it's bc of a logical mistake of it the exercise itself is wrong

[topaz granite]

yeahh i cant just really understand the topic well

[dusk tree]

If im not wrong first one is 4-isopropyl heptane

Second one 3-ethyl3methyl pentane

I opened the structure

Wait lemme draw

[topaz granite]

heyy i cant really thank u enough 😩

[thorny gyro]

I can try explain this. A B and C are three compounds that have 2 atom of Carbons. Let’s take structure A for example. First carbon is connected with CH3/CH3 and H. The second carbon (which is behind the first one) is connected with H/CH2CH2CH3 and CH2CH2CH3. You write it down and then you give IUPAC name

Sorry for my bad English xd

[topaz granite]

okay sureee

[dusk tree]

3. 4,4 diethly-5- methly octane i could be wrong tho

[topaz granite]

nahh it's really okay

[topaz granite]

unlike me cant really understand how to answer

thank you so muchh huhu

u just saved my gradess

[dusk tree]

@topaz granite

this is how i found it

hope it helps i took organic last semester if i rremember correct these are correct

[topaz granite]

thank u so muchhh😌 💗 how did u even do these

[topaz granite]

online class really sucks

[dusk tree]

i have a quiz now but after that ill try my best to explain

[topaz granite]

ohh okay sure2 just focus on that first

[dusk tree]

yeah if one more semester is online too ill probably freeze my uni one year i feel like i dont learn anything and stressed all the time :/

[swift hatch]

Terrible time to be a student

[topaz granite]

thats really my plan cuz this is my 1st yr in uni but im already enrolled :<<

[dusk tree]

yup 4 whole semester at home at first two i was doing well but last two i feel like im burnedout and failing the classes im good at 😦

[topaz granite]

yeah totally

[dusk tree]

me too i really wanted uni experience but so far its not going well

[topaz granite]

me too like it's stressing me out

[swift hatch]

Just hang on a little more, next year we'll be back in class and you'll see how cool student life really is

[topaz granite]

yeahh i wanna experience uni life too cuz ure on ur own

[topaz granite]

hoping for it 🤞 🤞

[thorny gyro]

I wonder if it is going to be the case. Isn't it still too risky to open up universties when they can provide online lessons.

[thorny gyro]

I mean there is one 0 risk scenerio and a risky one isn't it better to lock up for a few years

[dusk tree]

yeah esp when you are first year it must be harder to make friends or join events or student clubs

[swift hatch]

Thing is everyone is totally done with covid, the social pressure on governments is pushing them to let us live normal lives again

[thorny gyro]

Does anyone know how I explain why NADH/NADPH/FADH2 and FMNH2 have more Energy than their oxidiced structures??

[topaz granite]

yess cuz i think meeting personally my online classmates would be totally awkward at first

[thorny gyro]

I would like to be enjoying uni life too but I don't want esspecially my parents to get sick. I don't know what I would do if pandemic reached me.

[dusk tree]

yeah but think about this way a lot of ppl will be searching for friends so it might actually fasten the friendship process but for sure it will be awkward at first

[thorny gyro]

I don't think it is a smart or ethic thing to do to turn back to my normal life

[topaz granite]

yepp im still excited to meet them tho 🥰

[cedar swan]

Hi, i just need help solving "t" in this equation. 1=4(1/2)^(t/14016000). I'm trying to find out how long it would take for 4mg of 226Ra to become 1mg of 226Ra.

[ashen marsh]

For it to go from 4 mg to 1 mg, it has to undergo 2 radioactive decays, so it takes t = 2*halftime I think. Dunno.

[cedar swan]

Yes but I want to figure out how to solve t. What steps do I take to have t on one side and the rest on the other side.

[thorny gyro]

https://www.wolframalpha.com/input/?i=1%3D4(1%2F2)^(t%2F14016000)+solve+for+t

I hope this doesn't sabotage your learning effort tho' 🙃

(I also just copied in the formula, I have no idea and didn't double check if any of that makes sense. @cedar swan )

[cedar swan]

Thank you so much!

[cedar swan]

The answer checks out c:

[ashen marsh]

Do you still want to see the steps done manually?

[cedar swan]

that would be very much appreciated

[brazen kindle]

someone?

[swift hatch]

Sorry mate I passed the thermodynamics class then my brain just erased everything concerning that part of science lol

[brazen kindle]

understandable xD

[ashen marsh]

check DMs

[versed vortex]

Just for reference, I have started a youtube channel last year, and have been slowly solving each problem in Griffiths Electrodynamics. (Will eventually do other books). I'm up to problem 2.29 atm. If you ever need to check your answers https://www.youtube.com/channel/UCDfIEMaBhl4B2fWo2wsnKSA

[thorny gyro]

oh nice

[edgy mirage]

https://dontasktoask.com

[solar condor]

Hello i need help, i was wondering what would be the spin (alpha or beta) of a nucleus in a magnetic field of 5000T in a NMR spectroscopy. I was introduced to NMR but can't understand how the magnetic field could influence either alpha or beta positioning. Thx

[lilac mesa]

I think you need to know the gravity of the earth

[solar condor]

but are you taking hawking's radiation in to account ?

[lilac mesa]

damn i think you're right

[edgy mirage]

what does hawking radiation have to do with NMR spectroscopy??

or did I just get baited there

[solar condor]

https://www.youtube.com/watch?v=d1YBv2mWll0

[thorny gyro]

hi 🙂 does anyone here by any chance know what is like the most simplest way to describe the difference between alkaline and base for chemistry?

[thorny gyro]

anyone?

[frank marsh]

i am not completely sure but it could be because NADH holds more bonds than NAD+, so it requires more energy to break those bonds, making it more energetic.

[thorny gyro]

are you sure about that? I would suggest you to review Acids and Bases.

[thorny gyro]

In simple terms, an Alkali is a water soluble base.

[frank marsh]

oh yeah lol i switched alkalines and bases my apologies

[thorny gyro]

thats interesting, thanks for the insight

[thick stratus]

Ya that is really interesting

[worn light]

Alkali -
Dissolve in water, all alkali are bases, accepts proton releasing OH- ion.

Base-
Not dissolve in water, not all bases can be alkali, neutralize acids.

[thorny gyro]

thank you for clarifying!!

[thorny gyro]

That could be it. Thank you mate 🙏🏻

[shrewd musk]

what is electrostatic shielding?

[willow lion]

Any tips on improving general chemistry understanding and application?

[polar mortar]

Imagine you a have a hollow object made up of conducting material. It refers to the literal “shielding” of the inside of this conductor from the electric field outside of it which means that the electric field inside such a conductor will be 0, even if the charge accumulates on the conductor’s surface. This is also called a Faraday’s cage.
The easiest example of this is sitting inside a car during a lightening storm- the car acts as a faraday’s cage keeping you protected from the charge outside -as long as u don’t touch the surface

[swift hatch]

what part of the chemistry ? 🙂

[willow lion]

Organic Chemistry, Acids and Bases as well as Back Titration (stochiometry)

[worn lion]

Well a tip with application is to make sure you understand what is actually happening and why something is happening.

[swift hatch]

well in organic chemistry: there are 2 major concepts: nucleophiles/electrophiles and acids/base together these two concepts lead to the understanding of a huge part of the reactivity in organic chemistry.

About acids and bases: the classic definition of an acid is "an acid is a molecule which have a tendency to release a proton" and the base is the molecul which tends to capture a proton.

Finally about back-titration: the molecule you use to titrate can't lead to a change of color (for example) so, the idea is to use a known amount of a solution of B to titrate the solution A (the one with an unknown concentration). a certain amount of the molecules of B will react with the totality of A. Now all you have to do is to use a last solution of C to titrate the excess of solution B.
The stoechiometry behind this is the following one:
n(A unknown) = n(B initially added) - n(B titrated by C)

[swift hatch]

That's for you

[willow lion]

Thank you

[dusk flax]

Could anyone help me with this question? [Subject: physics]

[plain epoch]

in specific heat calculations what should the units be? it gives me kg, C, and cal/g. I am confused on what to make them so the problem works, ive tried a few ways but never got it right.

[bold herald]

3.0N

you know that it extended 2.2cm

19,2-17,0=2,2

so you just look at the y axis for 2.2

then u go to the right till u cross the line

and at that point just look at the x axis

and there it is 3.0

[dusk flax]

Thanks! That helped alot

[bold herald]

np

[visual plume]

How should i studu physics

[tepid summit]

what is a polyatomic ion

is it one of those NO3/SO4 things

also can u split polyatomic ions

into their base elements

e.g.

2OH = O2 H2

[shrewd musk]

yes by hydrolysis or water splitting method u can.

[tepid summit]

Hydrolosis is basically synthesis right>

except with molecules

[willow lion]

hydrolysis is a catabolic reaction, which uses the addition of water molecule to split, while condensation is an anabolic reaction which uses the removal of water to combine 2 molecules/compounds I think

[thorny gyro]

Give an example of 2 structures, one from unicellular and one from a multicellular organism that perform the same function and explain how they're the same.
I'm kinda stuck here, what does it mean by structures? Like organisms?

[willow lion]

I think it is referring to cell structure, unless the question is asking for cell organelles

personally I think its more of the latter

[thorny gyro]

Ah I believe it's cell organelles since we haven't done cell structure yet

Thanks

[thorny gyro]

solving a lot of practice problems. only use the solutions when you are really stuck.

hi

i dont understand physics lmao

it is hard to grasp the material when you're first introduced to it. its best to look at example problems to understand the physics behind something. understanding vectors is also important

[viscid nest]

hi guys i was wondering is anyone here very good in chemistry?

[steel crown]

?

[minor minnow]

depends on topic

[viscid nest]

ah its cool i got someone helping me out alr

thanks though

[minor minnow]

dont mind

[thorny gyro]

how can i find the difference between polar and non-polar molecules?

electronegativity differnece

google "electronegativity and polarity"

[willow lion]

0-0.4 is non polar covalent 0.4-1.7 is polar covalent and 1.8 is ionic compound for electronegativity difference

[shrewd musk]

pls anyonee tell me how to deal with capacitor questions, its like so complex and tough to dooo :c

[minor minnow]

lemme see

[willow lion]

Does the glucose (alpha or beta) matter when synthesizing disaccharides? i.e glucose + glucose (or is it fine if it just any glucose)?

[thorny gyro]

what about them?

[thorny gyro]

the key is to treating them just like any other component in a circuit

[shrewd musk]

Like im unable to solve the complex capacitor questions, like the wheati stone capacitor, u can search in google

TwT

wheat stone bridge capacitor*

[frigid blade]

Im not 100% sure but I think the common disaccharides have these specific names and specific alpha or beta konfigurations...if you take other konfigurations the dissacharide will probably just have a different name and structure so I think it matters which ones you take to synthesize them 🙂

[willow lion]

Ok. Thank you

[errant solar]

hey, can anyone help me with this?

its really urgent :<

[little fog]

suvat question right?

gimme a sec n ill send the working

[errant solar]

ok!

[errant solar]

suvat?

[little fog]

for constant acceleration there's a set of equations ("suvat" equations) s=displacement, u=initial velocity, v=final velocity, a=acceleration, t=time

[errant solar]

ohh ok

didn't know that

[dense pine]

Just a quick intrest question:

When looking at the strength of intermolecular forces (in small molecules) will there ever be a mass descripency large enough for the strength of dispersion forces to be greater than a hydrogen bond?

[errant solar]

@little fog could you get that done yet ? :<

[little fog]

yea got it

hope that helps?

[errant solar]

omg thanks

[dense pine]

alpha beta just denotes where the hydroxyl group was at the time of the ring closing

[errant solar]

means a lot

[little fog]

🙂

[willow lion]

Thanks

[novel basin]

nah hold up final velocity is 5.5 ms-1

[errant solar]

@little fog but v²=30.25 right?

[little fog]

oops

wait lemme check

[novel basin]

Yeah haha

[little fog]

oh yeah hahaha

[tired bridge]

guys what's the difference between a pipette and burette in terms of use?

[little fog]

sorry ab that typed it into my calc. wrong!

[errant solar]

thanks!

[novel basin]

Burette is usually more accurate and is used for titration pipette is for drops

[errant solar]

no probs!

[novel basin]

A burette is a mounted glass tube

pipette is a lil squirty squirt thing

[tired bridge]

aah so there's a difference in how far you can move it?

[novel basin]

Sure

[dense pine]

move what

the liquid?

[novel basin]

Plus you can control a burette easier and it has measuring intervals to make sure you have the right amount of liquid you're using

[dense pine]

pipettes are used for measuring a specific volume of liquid

[novel basin]

Isn't that a burette?

[frigid blade]

A micropipette is for specific volume and a pasteur pipette is just dropping and not very accurate

[keen turtle]

What is relative mass?

[novel basin]

Is that for Chem?

[keen turtle]

Yes

[novel basin]

Atomic or isotopic?

[keen turtle]

Im a gcse student but im starting from the beginning of all subjects

[little fog]

Isn't it mass relative to the mass of a carbon 12?

[keen turtle]

Atomic

[novel basin]

Here's my notes

[keen turtle]

Thank u ☺️

[novel basin]

:)

[errant solar]

@keen turtle here's mine :)

[keen turtle]

Thanks i like how u scanned ur notes

My friend wants to know what alkenes are

do you have notes on alkenes i could send her

[thorny gyro]

@novel basin that’s how I like A level physics, straight up, without ice.

[errant solar]

@keen turtle here you go

I only have one hand note, but also attached 2 pages from my book, hope this helps

[keen turtle]

thanks tiger

[errant solar]

haha thats not my name actually but most welcome!

I actually gave the hand note of alkyne in the first one, this one is correct

[solemn raft]

ty i also needed this

[errant solar]

welcome!

my bad just saw those didnt have the full image of a page 😓

@solemn raft @keen turtle this contains both alkene and alkyne discard the previous two pdfs

[solemn raft]

oh alr thanks!

[errant solar]

can someone help me with this

[swift hatch]

ok so first you have to convert the kg into newtons

[little fog]

Like this maybe?

Mgh for the work done

Hope that helps @errant solar

[errant solar]

thanks!

[little fog]

nw!

[errant solar]

I did it in this way maybe its not correct

can you tell?

@little fog

[little fog]

Yeah I think your version for the wasted energy bit is correct

ignore that last bit on my working lol

[errant solar]

ok!

[plush anchor]

Anyone studying international relations?

[golden sapphire]

Anyone studying economy?

[daring canyon]

Anyone have good books from the 20th century regarding geology, geomorphology and just any earth-science, or biology/chemistry/physics/mathematics? Thanks! 🙂

[thorny gyro]

Does anyone know the similarities of an amoeba nucleus and a human nucleus?

[daring canyon]

Hopefully this helps.

[thorny gyro]

That helps a lot, thanks!

[late ermine]

Anyone studying medicine? Which book do you recommend?

[daring canyon]

@late ermine Not a medicine student, but, from my limited knowledge from my surroundings, it really depends on what type of scale of medicine you want to look at... Do you mean research papers on various medicinal effects....? Do you mean books on administrating medication? Development of bio-technic appliances...?

Organic chemistry...? @late ermine

[native edge]

Am a medicine student. To piggyback on what Gecko said, books are entirely dependent on what you're studying.
For a surface overview of anatomy & physiology I recommend Principles of Anatomy & Physiology (Tortora) for the very pretty pictures and handy tables. If you're doing cell biology The Cell or Essential Cell Biology (Alberts et al.) would be my go-to book. For a brief overview of patophysiology I recommend the USMLE First Aid books (step 1 and 2 CK) and/or Basic Pathology (Robbins).

Hope this helps! If you share what specific part within medicine you're studying I bet someone could offer more specific advice.

[daring canyon]

As Dutch students say: 'Zieke 'vo, amice!'

[thorny gyro]

Super stuck on all of this. Topic is called "Stoichiometry" for honors chem.

@little fog Sorry for the ping lol, just was thinking if you knew this stuff

[nimble pasture]

theorganicchemistrytutor youtube channel is a good resource for all things chem

https://www.youtube.com/watch?v=7Cfq0ilw7ps

check his channel out. helped me pass chem 1 and 2

[unreal dirge]

Can confirm. Organic Chemistry Tutor and Khan Academy are the reason I'm getting through chem.

[thorny gyro]

Its just that my teacher is like strict on certain ways of teaching.

[little fog]

sorry Loctiqz, honors chem is a bit beyond my chem knowledge lol, good luck though! im sure youll work it out eventually

[thorny gyro]

Using methods called Dimensional Analysis

[sleek steppe]

Anyone got a high quality labeled picture of the periodic table

[frosty swallow]

Meh

[nimble pasture]

@sleek steppe i used this one a lot for my courses

[little cloud]

Do you still need help? Feel free to DM me, I know this stuff decently well

[late ermine]

@native edge thanks for your advice man and books, next year I apply to UBA (Buenos Aires university) and I would be a doctor one day :)

@daring canyon well no exactly I think Books about anatomy and biology :)

[thick marlin]

Any tips for improving Solid Works skills?

[mint aspen]

The easiest way is by practicing on your own if you have the licensed software.

Test out different types of designs and models at first and then slowly go for more complex designs

[thick marlin]

I am doing random youtube tutos right now

Like 6v car engine and stuff .d

[mint aspen]

That's cool!

[thick marlin]

Thx

[mint aspen]

Just make sure you understand what you do and not just copy what they're doing

Also, think of different ways to design the same

That'll help you build your skills and get a better sense of design itself

[thick marlin]

Yeah

[low fox]

does anyone have tips for studying ochem// orgo? i have a midterm on friday and my only soalce rn is khan academy

[swift girder]

Anyone here studying aerodynamics? Do you have notes on how the Rayleigh Pitot Tube Formula was derived?

[nimble pasture]

https://youtube.com/c/TheOrganicChemistryTutor

[willow lion]

If you obtain a green seed from the pea plant that must mean that the phenotype is dominant, dominant shows no matter what, and in this case it can show through either homozygous dominant or heterozygous (also known as 1 dominant gene and one recessive gene)

[tired radish]

ty

[willow lion]

👍

[errant solar]

can anyone help me with c and d

anyone here :<

[thorny gyro]

power is work done per unit time

[errant solar]

i solved c

is it correct?

[thorny gyro]

but the pump's efficiency is 60%

[errant solar]

can you solve them please?

[thorny gyro]

I can help you conceptually

solving equations is your job.

[errant solar]

thanks i got it correct

[sand jacinth]

what happens to the kinetic energy of photoelectrons when intensity of light is increased

[thorny gyro]

Kinetic energy of photoelectrons does not depend on the intensity of light.

E = hv

[sand jacinth]

cause each photoelectron only absorbs one photon right?

[thorny gyro]

Yeah and the energy of each photon is a function of it's frequency

[sand jacinth]

aight thanks mann

[thorny gyro]

Np

[sand jacinth]

monochromatic light causes a photocurrent from a surface what happens if the intensity of the light is increased?

[daring canyon]

Soon becoming a geo-scientist (Well, a BSc geo-sciences will be in the pocket). So, if anyone ever has any questions about geology, gemorphology, hydrology, earth-sciences as an education, or any other questions about earth-sciences, such as what it contains, or what disciplines flow from it...Let me know! ^_^ Also, for those people who immediately want to contribute to science without having a background in it, you can look up Cosmoquest, and start cartographing planets and asteroids and whatnot! The information and your work is used by NASA!

[thorny gyro]

If we increase the intensity of light , we increase the number of photoelectrons emitted. Current is charge flowing through an area per unit time.

[sand jacinth]

therefore photocurrent will increase to a maximum value?

[thorny gyro]

MAXIMUM?!

You're confusing intensity with frequency.

Frequency affects the kinetic energy of electrons emitted

wow this server is the best idea I've ever seen

[vital charm]

Anyone knows good textbooks to study Lagrangian mechanics?

[thorny gyro]

but that's irrelevant because you've a current/

[sand jacinth]

oh okok

[thorny gyro]

idk how to explain this tho.

[summer merlin]

When u wanna talk about the photoelectric effect u need to treat light as though it’s made up of little particles (photons) instead of a wave as u would normally in diffraction etc because this is a quantum effect. Basically when an electron is freed from the metal surface that’s because it’s absorbed one photon but only If that photon had enough energy to free it from the surface. The amount of energy the photon has only depends on the color(frequency/wavelength) of the light emitted via E=hf. If u make the light brighter but keep the color the same then that means ur just creating more photons. The KE that they have is just the leftover energy that the photon contained after some was used to free the electron from the metal , so if the frequency of photon is higher then the electron gets more ke. Photo current is just these freed electrons being ejected from an anode sheet of metal and hitting a cathode. If more electrons hit the cathode then ur ammeter will read a larger current. Increasing the frequency of light will just give each electron more ke but won’t change the number of electrons emitted. If u increase the intensity however there will b more photons hitting the metal so more electrons will have photons hitting them so more electrons are freed so u get a higher current. So the current u get is only dependent on intensity not the color of ur light

Yikes that was a paragraph I dunno if it was helpful sorry if it wasn’t

[summer merlin]

Ngl just watched some videos on YouTube for it

https://youtube.com/playlist?list=PLdgVBOaXkb9CD8igcUr9Fmn5WXLpE8ZE_

These r nice

[vital charm]

Oh yeah I watched this one before!

[summer merlin]

It’s hard when u first see it but Just do some questions using the new formalism and u acc just start using it for everything

[dense sleet]

can someone help me with this?
-rotate the following line upon the e-e axis

[thorny gyro]

here you go

[digital parrot]

can someone explain the general theory of relativity in simple words? it's not for a test i'm just curious and most of the videos i watched are confusing

[ashen marsh]

Spacetime is bendy, hence gravity.

[abstract turtle]

I need help for an exam tomorrow 🥺 who’s familiar with schrodinger equation pls? I would like to know how do we know when the composant inside the exponential is positive or negative

[spiral nest]

quick somebody list out the entire calvin cycle

[tame sequoia]

Can anyone help me with this electrostatics problem? :)

[autumn shore]

What is the question ?

[thorny gyro]

yeah

[tame sequoia]

I got it thanks

[thorny gyro]

cool

[tribal mist]

best i have drawn..

[thorny gyro]

can anyone explain theory of relativity in a way that even dumb people can undeerstand

[blissful parcel]

I got this , is this the correct answer?

[teal bloom]

I'm having some trouble understanding solubility and how it relates to forming a precipitate. Is a compound not soluble if it forms a precipitate? Also, for alkaline earth metals, does the solubility decrease as you go down the group?

[cunning crescent]

If a compound forms a precipitate, that means it is not possible to dissolve any more of the compound in the solvent. How soon this precipitation happens is determined by the compounds solubility in the solvent, if the compound is easily soluble it takes more of the compound to be added for a precipitate to form, whereas with compounds that have low solubility in the solvent, it will form a precipitate very quickly

[teal bloom]

@cunning crescent Oh that makes sense, thank you!

[dusk wagon]

Hey... whats the density of the calcium and magnesium (element)... can't find the answer anywhere in my language resources...

[teal bloom]

@dusk wagon I found calcium to be 1.55 g/cm3

[dusk wagon]

ty^^

[teal bloom]

@dusk wagon and magnesium is 1.738 g/cm³

[dusk wagon]

u saved me LY

[teal bloom]

no problem

[dusk wagon]

@teal bloom if im not bothering can u find me the hydrogen?

[teal bloom]

liquid or solid?

[dusk wagon]

both😅

[teal bloom]

lol okay

L: 0.07 g/cm3

S: 0.0763 g/cm3

[dusk wagon]

tyy

[teal bloom]

np

[tame sequoia]

I got something different bro

[blissful parcel]

Eh lemme check my calculation

16 instead of 64

Now is it correct?

[thorny gyro]

need basic ways of finding tendencies in kinect data (motion tracker)

also, can anyone help me with an online physics exam?? in beg june (dont know date yet). i can send u some sample questions. i am a sound engineering student taking an acoustics class, the class is actually called signals and systems. this would be a payed gig obv:))

or if you know anybody

[thorny gyro]

I have a doubt from chemistry

Calculate the e.m.f. of the following cell:

[sturdy jasper]

hello

[thorny gyro]

Al/Al+3||Al+3 (0.2M)|Al

[thorny gyro]

does anyone know anything on gas laws?

like im having trouble on this worksheet for chemistry

dm me if you can

[iron epoch]

There are some Germans?

Or german speaking study rooms?

[thorny gyro]

sure are germans here

[iron epoch]

Because in english would be very hard for me to study

[thorny gyro]

whats the topic?

[manic ore]

yeah what topic

[iron epoch]

Mechanical engineering

[thorny gyro]

nice you can pm me if you have questions

[iron epoch]

Do you have a room for germans?

[thorny gyro]

not really but you can occupie a study room

[iron epoch]

Im new in discord and im going to understand the app

[thorny gyro]

ok wait

[iron epoch]

That will be cool i think

How it works haha?

[thorny gyro]

ive sent you a pm

[iron epoch]

Ok

[thorny gyro]

help me with chemistry please

Calculate the e.m.f. of the following cell: Al/Al+3||Al+3 (0.2M)|Al

[runic epoch]

Can someone tell me how to use percent yield to find mass of the product

[broken arrow]

Not entirely sure where to put this, but does anyone know how to position figures in latex and have them wrap around text i've been trying for too long to find an answer

[cunning ore]

do you have the reduction potentials

[cunning ore]

do u still need help

[runic epoch]

yeah

[cunning ore]

ok first balance the equation for that reaction

and find the theoretical yield of Mg(OH)2

[sudden turtle]

16,675g?

[cunning ore]

after finding theoretical yield you can plug it into this with your 70%

[runic epoch]

thanks 👍

[cunning ore]

oh np lmk if you have more quesitons

[thorny gyro]

how to remember the valencies of all elements? -chemistry

[rose lake]

Bro!

Yay!

i joined!

[paper roost]

The more you see and use them, the more easily you will remember the valencies of elements

[bright palm]

how do i find r in the ideal gas law formula?

im solving for n but cant figure out how to get r

[mighty vector]

r is a constant = 8.314 J/mol K

[thorny gyro]

And you can also make different tables according to the common valency.. like elements with +2 valency arranged in one table .. keep revising the table frequently .

[thorny gyro]

Hey where did i go wrong

[little cloud]

What exactly is wrong?

[calm granite]

I have made a server for NEET aspirants! Dm for link.

[worn lion]

Hi there, in class today we were introduced to Faraday's constant while covering quantitative electrolysis. I'm currently doing a question that I have a question about. The question is asking with a current of 2A (amps) passes through a solution of electrolyte for 10 mins how much metal is deposited if it is AgNO3. I know that I am able to find the charge in the question which comes out to be 1200C but I'm not really quite sure where to go from here. If anyone has any ideas that would be great. Thank you ! (chemistry question)

[little cloud]

So for Silver, the number of electrons required to convert Ag+ to Ag would be 1 per atoms. That way, you'd need to find how many electrons you have in that 1200 C and see how many atoms of Silver you're able to convert to solid Ag

The Faraday's constant is essentially the number of coulombs of charge in one mole

[dull jewel]

hey im in yr10 highschool does anybody know where to get chemistry and physics notes?

im doing igcse

[worn lion]

ah okay I see, so I can also just divide the charge by 1 Faraday?

[little cloud]

Pretty much @worn lion

[worn lion]

Ah alright, that helped a bunch. Thank you !!

[young torrent]

Hey, I need some recommendations as to how I can retain/understand the content in physics. Should I be writing notes or gravitating towards questions?

[lethal sedge]

i think that depends on your personal style of learning

i learn better if i read stuff and write it down again, but a friend of mine learns better with questions

[tribal mist]

i would suggest to solve as many problems u can ....that ll will bring u confidence

[vast pewter]

can someone help me with this plz

[tacit spoke]

sure, give me a few minutes

[vast pewter]

oki thx

i am having trouble with the c (iii) part

i did the (i) and (ii)

[tacit spoke]

oh ok, what what the reagent in excess, you need to use molar ratios to see how many moles will be used

[vast pewter]

that will be 0.12 right

but then multiply by 2

[tacit spoke]

so teh mass remaining at the end of the excess reagent is = molar ratio of excess - molar ratio of limiting

[vast pewter]

oh

[tacit spoke]

what is excess reagent, i think i can show you better on paper

[vast pewter]

h20 right

[tacit spoke]

https://www.youtube.com/watch?v=i71BMVlrMiw&ab_channel=WayneBreslyn Use this video to try figure it out, otherwise I can do it for you if youre still stuck

[vast pewter]

oki

lemme watch it

thx tho for the help

[tacit spoke]

🙂

[vast pewter]

he doesnt talk about excess

can anyone help plzz

ohh wait is it

excess reagent - limiting reagent?

[thorny gyro]

Well, no.

[vast pewter]

oof

then wt is it?

[thorny gyro]

Can a reagent in excess possibly limit the reaction?

[vast pewter]

no

[thorny gyro]

So?

[fast hornet]

Yes

[vast pewter]

ok i am confused

wts the method?

[fast hornet]

If we use limiters I don't know the actual term of it but if u use limiters it will stop the reaction

[thorny gyro]

Well, Suppose.

[vast pewter]

umm so how do we do iii?

[thorny gyro]

You have 5 moles of h2

[fast hornet]

@vast pewter not talking about the question

[vast pewter]

oh.

[thorny gyro]

and 10 moles of [O]

[vast pewter]

could u help me with it tho?

[thorny gyro]

Well, I am trying to help.

[vast pewter]

oh

my bad

i thought

you were talking about something else

sorry there

[thorny gyro]

you've 5 moles of h2 and 10 moles of [O]

they react and form h20

[vast pewter]

ok

[thorny gyro]

How much h20 would be formed?

[vast pewter]

umm

[thorny gyro]

you've only 5 moles of h2

[vast pewter]

ye

10 right

i hope so

[thorny gyro]

so the maximum amount of h20 you'll be able to make is 5 moles.

[vast pewter]

oh

wait

yeh

makes sense

[thorny gyro]

you'll run out of h2

[vast pewter]

cuz h2 is limiting

[thorny gyro]

yeah!

[vast pewter]

ohh

so

how do u find that answer?

[thorny gyro]

which one?

[vast pewter]

.

iii)

[thorny gyro]

why did you get after solving (i)?

[vast pewter]

why?

[thorny gyro]

I am lazy i dont wanna calculate the no of moles lol

[vast pewter]

oh wt

one

sec

Ca = 0.12 mols

H20 = 0.2 mols

H20 is in excess

because of the ratio

it should be 0.24

[thorny gyro]

um

[vast pewter]

is that wrong also

[thorny gyro]

h20 is the limiting reagent you mean

[vast pewter]

yes

oh yeh

MY BAD

oh oof

i wrote h20 limiting in my book

?

[thorny gyro]

Yeah so you'll be left with 0.02 moles of Calcium

[vast pewter]

ye

OMG

I AM SO DUMB

[tepid summit]

is mole ratio year 9 stuff?

[vast pewter]

1st year of olevel

ye 9 i think

[tepid summit]

oh

[thorny gyro]

you can multiply that by Its molar mass to get the answer

[thorny gyro]

it's not given in question paper though

[vast pewter]

yes

[vast pewter]

thank you so much

[thorny gyro]

np

[vast pewter]

wait one last question

[vast pewter]

how did u get this

the number

0.2

[willow lion]

moles = mass (g) / mr (relative molecular mass)

[vast pewter]

nono the number of moles

so like

did he get it from the equation

[thorny gyro]

0.1 moles of cal will react with 0.2 moles of h20

and then you'll run out of h20

[vast pewter]

yes

[thorny gyro]

0.12 - 0.1 = 0.02 afaik

[vast pewter]

oh so

limiting reagent

[thorny gyro]

is h20

[vast pewter]

oh

one sec

so

excess reagent

molar ratio of the excess reagent

[thorny gyro]

calcium

[vast pewter]

u get this

[thorny gyro]

?

[vast pewter]

ahhh

i am so badd

[thorny gyro]

how do i write a research question

i've forgotten

[unborn harbor]

do you mean like using an "if I do this then I think this will happen" hypothesis?

[thorny gyro]

no thats different

im writing a lab report

we need to have

[thorny gyro]

background research
aim
research question
hypothesis
explanation of variables
materials
method
data
data analysis
graph
hypothesis evaluation
method evaluation
conclusion

[unborn harbor]

I guess the research question then is "what are you trying to solve"

[thorny gyro]

well how do i write one

[unborn harbor]

I think you want to capture the part of the natural world that there isn't currently an answer for

I think you sort of explain the unknown part of something you're investigating

In terms of how, I imagine it could be like a sentence or a paragraph that conveys a question

[thorny gyro]

Alright

[novel sage]

how to study topics that you don't like ??(like inorganic chemistry)

[thorny gyro]

Don't.

[novel sage]

its necessary

[thorny gyro]

why lmao

[novel sage]

i m gonna fail if i dont

[thorny gyro]

why would you study something you don't like

why did you take that class in the first place?

[blissful parcel]

Why do peeps study basic maths if they don't like?

Something must be taught

It's not like we can decide wut we study (at basic level)

[thorny gyro]

Well, we are talking about High School/College

Basic Science and Maths are necessary

[blissful parcel]

In some countries in high school you don't have choice to select chemistry seperately by topics (physical , organic , inorganic) it's just chem

And HS chem is basic too

[thorny gyro]

Well, I know that but

[thorny gyro]

i did not know that

If that's the case

idk

[foggy berry]

anyone who knows electrolytic cells in Chemistry?

[ripe peak]

E.g. in my country, the degrees are fairly strict, with only a few optional courses towards the end. Sometimes you gotta study what you dont like

[swift hatch]

maybe I can try to help

[reef peak]

can anyone help. what happens to light as it goes from a more dense to a less dense medium.

[swift hatch]

light should accelerate since we know that the refractive index depends on the density of the material.
So light will get closer to the normal line

@reef peak

[reef peak]

ok thank you

[swift hatch]

sorry, the light will bend away from the normal line*

[coral crypt]

Hey guys

[tender mesa]

yo

[coral crypt]

Can someone help me with the 14th one

[willow lion]

How are you able to know the state symbol of products of any Chemical reaction?

[coral crypt]

If you do get it pls tag me :)

[swift hatch]

well you have to know it in many cases

like water is a liquid in normal conditions but at high temperatures or low pressures it can be in it's gaseous form

[coral crypt]

Thank you so much!

[viscid nest]

hey guys I need some help,
so imagine you are trying to find out which among two alkalis is a better neutralizer for acids right. What would be a suitable indicator used to show that the acid being neutralized turns neutral?

I thought of using a universal indicator but just in case there is others

[reef peak]

the only one i can think of is universal indicator

[viscid nest]

ohh i see

alright thank you

[raw rose]

plz help

nvm

im too good

[barren steppe]

was it just conservation of momentum?

[raw rose]

yh

nvm im not good enough. plz help

[barren steppe]

just conservation of momentum again

[daring canyon]

So, I have an answer for you! The problem I had, the subject I didn't like, was mostly to the teaching methods....
I found external material to be very helpful, for the insights I got in the subject were absolutely MINDBLOWING.
Therefore, try to find the importance of inorganic chemistry, and find yourself a reason as to WHY it is important to you.
Of course, you might not use it anytime soon, but trying to understand WHY it's important is part of studying the topic itself. 🙂

[viscid nest]

hey I need some help with this problem:

the answer for (f) is 0.00124

[daring canyon]

I'm sorry, what is T? and what does the value of f mean?

[viscid nest]

oh sorry let me get that for you

(f) = 0.00124

[daring canyon]

Yeah, but what is the meaning of f? 0.00124 what?

[viscid nest]

ohh

its the number of moles of sodium carbonate

i hope this helps

sorry this question is a very chained question

[daring canyon]

Let's see....

Oh jesus....

Erhm, let's see...

[viscid nest]

is there anything i can do to make it easier for you

[daring canyon]

I... I feel really sorry to say this, but I think I've forgotten my chemistry... 😦

[viscid nest]

ahhh its alright 😅

dw its all cool

[daring canyon]

I always had trouble with it. At some point I was pretty good at it, but it's all gone now. I thought I knew how to do this. I'm sorry for wasting your time...

[viscid nest]

its alright dont mind about it

[rough void]

hi all

[viscid nest]

hello

[rough void]

im new to discord

[viscid nest]

welcome

[daring canyon]

Welcome!

[rough void]

idk anything

tips?

[daring canyon]

For what?

[rough void]

like tutorial..

[daring canyon]

This chat is for science-help.

[rough void]

ohh

[daring canyon]

So, if you have particular questions on science, you can ask them here. 🙂

Perhaps you ought ask this question at the 'general help chat' .

[viscid nest]

who invented chemistry

😅

[rough void]

okk srry

[thorny gyro]

Nature

[daring canyon]

Errrr.... Probably philosophers? 😄

[viscid nest]

ahh yeah

existance

thats also physics i feel

[daring canyon]

Yeah, @thorny gyro Perfect answer.

@viscid nest Biology= chemistry= physics= mathematics=philosophy.

[viscid nest]

mind blown

aight imma pray that question does not come up tomo

[daring canyon]

AHAHAHAH

You'll be fine!

[viscid nest]

hahaha thank you

alright imma head off thanks for all the help

[daring canyon]

You're welcome! If you type your question on the internet, you'll be bound to find it!

Unless some chemists here are able to help you. 😛

[swift hatch]

Well the Boyle-Mariotte's law led us to the understanding of the conservation of the matter which has been discovered by the first chemists (Lavoisier, Lomonossov, and a third one). These 3 chemists were working on the oxidation reaction of iron.

[daring canyon]

But Chemistry at that point should have existed, otherwise they wouldn't be called as such, right? @swift hatch

Or was that alchemy at that point?

[swift hatch]

Yeah the problem was: a guy like Lomonossov was still believing into the "phlogistic theory" which wasn't a scientific theory because it was linked to believes and stuff

Lavoisier should be the first real chemist of the history I guess

Because he wasn't believing into the phlogistic theory and brought another explanation of combustion

[cunning ore]

oh okay well you can find them on the internet and i believe during tests they would give you the reduction potentials

but in this case i dont think you need them actually

write your half reactions first and you'll see

(then, determine the reduction/oxidation potential of those half reactions)

oh wait scratch that lol you might need to use Nernst equation for emf not standard cell potential

ignore me im dumb

[supple monolith]

guys can u help with this: all the things in the universe are in _______ (its supposed to be realted to energy/motion)

[pastel steeple]

motion

all things in the universe are in motion

[blissful parcel]

What about the centre of universe?

[supple monolith]

wow thanks, im trying to do this assignment so... thank u!

[pastel steeple]

uwu

[leaden plume]

connected

[supple monolith]

lol

[leaden plume]

all things in the universe are connected

[supple monolith]

oh

what

how

[leaden plume]

thats what i think

[supple monolith]

ok but imma go with the first one since its more related to the subject matter

[blissful parcel]

Pls explain

[supple monolith]

but thanks anyway!

[leaden plume]

because everything is energy

[blissful parcel]

Hmmmm

[pastel steeple]

everything has energy

[leaden plume]

and energy attract to energy

[pastel steeple]

whether it be in form of potential or kinetic

[leaden plume]

because positive or negative energy

[supple monolith]

so their basically all in motion

[leaden plume]

yes they constantly move

[pastel steeple]

yeah kind of

[blissful parcel]

These statements are kinda vague , need proof or something to back it up

[leaden plume]

all atoms always move

[supple monolith]

becuz energy means to move

[leaden plume]

yes exactl

y

[pastel steeple]

not really

[supple monolith]

i mean theres different types of energy

[leaden plume]

Energy comes off friction

[supple monolith]

yeah

[leaden plume]

when there is movement there has to be friction

[supple monolith]

hmm

[leaden plume]

friction gives energy

[supple monolith]

other things can give energy too

[blissful parcel]

Nani

Nope

If a body is moving in a frictionless environment , it still poses energy ;-;

[supple monolith]

like space

[blissful parcel]

There many forms of energy

Mass Is energy

[supple monolith]

yes

[blissful parcel]

Potential

[supple monolith]

The different types of energy include thermal energy, radiant energy, chemical energy, nuclear energy, electrical energy, motion energy, sound energy, elastic energy and gravitational energy.

[blissful parcel]

Idk much about energy in detail

Am not theoretical physicist

[supple monolith]

its not a complicated question, its for my homework

[blissful parcel]

I will appreciate if there is one and wanna share some knowledge :)

[supple monolith]

nuke i think motion is the answer

[blissful parcel]

Yeah yeah

[ember talon]

This doesn’t include other forms like the Van-Der-Waals force that can... to make it very simple, create energy out of existing.

[blissful parcel]

In your question it should be that

[supple monolith]

its for grade 8 so it cant have a very deep meaning

[blissful parcel]

but why does van der wall exist?

[cunning ore]

nani

[blissful parcel]

Mass mass interaction?

[ember talon]

If this is a middle-school or high school level question though, most answers should be Kinetic or Thermal

[supple monolith]

what grade u guys in

[blissful parcel]

1st

[supple monolith]

woowwww

grape

[cunning ore]

r u guys debating if its energy or motion or wha

[blissful parcel]

No am just asking questions

[cunning ore]

o k

[ember talon]

It’s motion

[supple monolith]

guys its ok stop debating, im pretty sure its motion

[cunning ore]

i was gonna say energy in the sentence isnt even gramatically correct i dont htink

[supple monolith]

i just emailed my teacher and he said its motion

[blissful parcel]

Am not debating ;-;

[ember talon]

Mb I didn’t see your msg earlier

[cunning ore]

grape

[ember talon]

PhD

[cunning ore]

11th

[supple monolith]

for what

[ember talon]

Physics

[brittle folio]

why did god make me so bad at chemistry

[supple monolith]

o0o0o what u hoping to be

[cunning ore]

chemistry is just pain dw

[supple monolith]

lol u will get better

[ember talon]

A Physicist. Hahahaha

[supple monolith]

ooooh that was hard

lol

[blissful parcel]

Ohhhhhhhh ,can I dm you if any questions (not textbook ones) comes in my mind?

[ember talon]

If they’re problems I can remember.. sure. I haven’t done some things like Electronic circuits since highschool 😅

[blissful parcel]

Nah it will be more related to time and dimensions ;-;

[supple monolith]

electronic circuits arent that hard that i remember

[ember talon]

They do that at your school?? @blissful parcel

[supple monolith]

i mean im in grade 8 what would ik

[blissful parcel]

Nah , just curiousity

Well my physics teacher taught us very very basic things so ehhh , well I generally read about these things on internet

But I don't find exact answers

[ember talon]

Ah. I’m probably not educated enough to answer pop-physics ‘what if’s,’

To give an example, I do things that are more like ‘what happens to this molecule if I change its structure like so and shoot a laser at it’

[blissful parcel]

Uhhhh

Ohk

Well I will try to ask related that if anything comes upon my mind ( related to atomic structure?)

[ember talon]

Hahah. When I said pop-physics I meant things people instinctively think of when you say ‘physics.’

Time travel. Multiverse. Teleporting. Etc.

Unfortunately I never had any interest in it so I never researched it.

And sure, that works 🙂

[blissful parcel]

Nah , I just read somewhere /heard , that expansion of universe can affect time? , I don't know anything (or close to 0 ) about time and dimensions , so just searched net , read many things but couldn't find exact answer

[ember talon]

Mm. Makes sense. You have to think of it as space-time, not just Time. If space expands, I can guess that time would too.

[blissful parcel]

Hmmm

Yeah thanks

[vital charm]

@ember talon what field of physics you specialize in?

[sleek steppe]

Anyone knows any good resources for practice questions on science subjects. I’m studying chemistry on my own from YouTube and I need some practice questions to make sure that I’m understanding

[cunning ore]

i have my ap review book for chem

what topics do u need specifically

khan academy has some tho

there was this other website,.. i forgot

[thorny gyro]

Wo

[sleek steppe]

@cunning ore rn I’m studying unit conversions and properties of elements

[brazen kindle]

if you adiabatically compress a gas in an isocoric process, does the work energy get "stored" as kinect or potential energy of a particle?

me and my friends are having post-test discussions xD

[cunning ore]

https://flexbooks.ck12.org/cbook/ck-12-chemistry-flexbook-2.0/ im sure youll find smth here

[opaque hare]

it becomes temperature right, so its kinetic

[brazen kindle]

yes thats their reasoning

[opaque hare]

assuming ideal gas, there is no potential energy since ideal gas has no interaction

[brazen kindle]

OH

well damn

i actually cucked myself on that question then

[opaque hare]

😉 dw

[brazen kindle]

thanks for the help

[pure cypress]

Hi, could you help me? the topic is vector functions

The exercise says "define a vector function such that the graph of its range is the triangle of vertices A (1,1,1) B (1, -2,3) and C (3,2, -1) Is it unique This function?" This exercise was solved by my teacher (write three functions of lines) but my doubt is in the part where he says that the values of the variable (Example: f (t) = A + t (B-A)) cannot be equal in all three functions Why?

[unreal dirge]

Organic Chemistry Tutor, Melissa Maribel, and Khan Academy are amazing! They carried me through Gen Chem I this semester.

[cerulean lichen]

who knows chemistry, tell me what happens when C6H5OH interacts with CH3OH in H3PO4? (I’d really appreciate your help🥰)

[floral panther]

organic chem tutor is my dad

best god damn tutor ever

[versed vortex]

If anyone is studying physics and needs help, I have my degree in physics and would be glad too 🙂

[fringe venture]

anyone know any valuable preparation for AP Chem?

(the class ofc not exam, yet)

[rapid epoch]

1/2 k(x+30)^2=1.875 ----> (i)

1/2(k(x+40)^2=16.875--->(ii)

solve these you would get x

according to me , the spring is extended by an extra 30 cm , as the work done by a spring is 1/2 kx^2 , i think that this method should be appropriate.

so yeah we could do this by integration

since W=integral F.dr

the limits would be from original length to 30 cm in the first case

so like in the next case the limits would be from original length to 40 cm

hope u understood

[slender heart]

@slate talon i believe yes you have to set both equation equal to 0 and solve for x

[ember talon]

Physical chemistry

[thorny gyro]

any psychology student here ?

[wet trench]

A single force of 10N acts on a particle of mass m. The
particle starts from rest and travels in a straight line a distance of
18m in 6s . Find its mass.
i need the working as well

[thorny gyro]

use the work energy theorem

[thorny gyro]

what do you not understand about the problem?

[wet trench]

the answer im getting is wrong

[ember talon]

show us your working

[thorny gyro]

yeah

[wet trench]

im on laptop 😑

[ember talon]

F=ma, F=10n, X=16 t=6s, like this

[wet trench]

i need to take F as 10N, u=0, v=3m/s ri8?

[ember talon]

you know acceleration is in m/s^2 that is- distance over time^2

[wet trench]

i hvnt done this yet

[thorny gyro]

m/s^2

[ember talon]

^ yep mb

[thorny gyro]

F = ma?

[ember talon]

force=mass x accel

[thorny gyro]

10/m = a

10/m = d^2x/dt^2

[ember talon]

@thorny gyro not everyone necessarily knows the calculus short hand of solving these problems

[wet trench]

me is one of em sed

[ember talon]

so the formula you're using is S=ut+1/2(at^2)

[wet trench]

no F=ma

[thorny gyro]

this would give u a

[ember talon]

yes

i know

[thorny gyro]

then substiute a into f = ma

[ember talon]

yep

and you solve for m

[thorny gyro]

you'll get m

[wet trench]

ohkk

thx guys!

[urban lance]

Guys wth is a Bhor-Rutherford Diagram? I'm doing my brothers homework cause he's too lazy to do crap.

[ember talon]

@urban lance indicating which valence shells are occupied by x-many electrons. https://www.google.com/search?q=bohr-rutherford+diagram&sxsrf=ALeKk01U4yOvLhTMTdFQe-3naCDcWnEs-A:1620271877656&tbm=isch&source=iu&ictx=1&fir=vSVhyXPIbbLDlM%252Cm1sm0wN0nfUiCM%252C_&vet=1&usg=AI4_-kS3xKpacnmxt5f6w3DHNUoGe5Uurg&sa=X&ved=2ahUKEwjH29ONj7TwAhUzzzgGHeiJCLQQ9QF6BAgPEAE&biw=1920&bih=937#imgrc=vSVhyXPIbbLDlM

[urban lance]

Oh I see.

[ember talon]

has to follow that 1s2, 2p8, etc. pattern

[urban lance]

Don't get that though lol. But I get what you put out in the link. My brother is in 9th grade and his work seems light. He just has to draw 8 diagrams for 8 elements.

[pliant bluff]

please help

how do i do this

[grim matrix]

ok lets seee

draw the lewis structure

[pliant bluff]

So i think i know how to draw the lewis structure normally

but i dont really understand how to determine electron and molecular geomtry

[grim matrix]

oh you have to study that

if you see this

[pliant bluff]

ok

[grim matrix]

you know that the 2 doublets (free electron pares) push the bound F's down

and then you need to study what this structure is called.

[pliant bluff]

ok

thx

[grim matrix]

mayeb try to find some summaries on the structures online

https://chem.libretexts.org/Bookshelves/Inorganic_Chemistry/Modules_and_Websites_(Inorganic_Chemistry)/Molecular_Geometry/Molecular_Geometry_Overview#:~:text=Electron pairs around a central,as possible from each other.&text=According to VSEPR theory%2C molecular,all of the electron pairs.

[pliant bluff]

yeah i know a couple youtube channels that will probs have videos on how

i will check out that textbook

[grim matrix]

t-shaped for ClF3

[pliant bluff]

is there any difference with naming between ions and moleculars

[grim matrix]

see thats where i'm a little confused too, i don't rlly know what your teacher means by that

[grim matrix]

this is molecular

lemme google the other

theres a difference apparently

(but tbh they only use molecular in uni here)

https://www.youtube.com/watch?v=vk_UWS7bT6s

[pliant bluff]

Ionic would be different right cus there is a different amount of electrons that if it was a normal molecule?

[grim matrix]

ye but its the same structure

[median jewel]

Can someone help me with this question?

When 1.60 × 105
J of heat transfer occurs into a meat pie
initially at 20.0 °C, Find the change in entropy

[past dew]

Someone help me with physics

Indians will help more better ping me

[thorny gyro]

This is probably an Isothermal process

so dS = dQ/T

[thorny gyro]

thanks

[tepid summit]

how do you identify which hydrocarbon is which with the diagram

or the formula

[willow lion]

When reaction quotient is smaller than Kc that means the forward reaction is still happening and if the reaction quotient is larger than Kc then the reverse reaction?

[blissful parcel]

Yep

Reaction will be more dominant in backward direction

[willow lion]

Thanks Kayden

[blissful parcel]

Np

Until Q=kc

[peak geyser]

Can someone help me with understanding path difference and phase difference

[swift bough]

as in string and sound wave topic?

[peak geyser]

yup

anyways

i was helped with the topic

thanks

[swift bough]

okay

[willow lion]

Is the answer 0.64 mols?

[halcyon zephyr]

hi, I need help with this question, for what I can understand is that the total resistance of the circuit will increase due to the increase in the resistance of the connecting wires and the current of the circuit will increase, but what will happen to the filament wire?