science-help

[peak steppe]

can someone please explain why is the answer B?

[acoustic bobcat]

thank you

[ivory spade]

how is C correct?

[acoustic bobcat]

that's what

oxidation number is not proper

1 and 2 are proper

[wraith moss]

Ya 3 is wrong(shd hav been the other way around)
For 1 ,In oxo acids having same oxidation number ,the acidic strength decreases with decrease of electronegatvity
Nd for 2 ,(same halogen different O.N.)with the increase of oxidation Number . the acidic chararter also increases

For 3 Acidity is more for the one that releases Hydrogen easily and you must know the structure of the oxo acids of Phosphorus. (More oxygen-hydrogen bond ,more the acidity as Hydrogen attached with Oxygen is ionisable while Hydrogen with the central P atom is not)

[acoustic bobcat]

oxidation number also holds true

[wraith moss]

Yes it does! But for oxo acids of phosphorus(H4P2O5,H4P207,etc) you must check the acidicc strength with a different approach

[wraith moss]

I am not sure but it might have something to do with finding the heat of preci with the formula mc∆T/(amnt of AgBr produced)
M is mass of solution(40+60)=100cm³
C is specific heat capcity (for liquid it is 4.2)
∆T is chnge of temperature (31-28)=3
And in the reaction agno3 is the limiting reaction. Thus amnt of AgBr produced willl be 0.25 × 60

[ivory spade]

yes agreed

[ivory spade]

yes

[hybrid rose]

No 3rd one is right

Answer is correct

Acidic strength order would be H3Po2 > po3>po4

More number of H+ does not means it's more acidic , conjugate base is more stable in po2

So reaction would be more favourable in forward direction

[wraith moss]

Ya. Shin is right .i didnt consider this 😅
Thank you for correcting me

[peak steppe]

i see!! but i have been wondering, how do we get 0.25 × 60?

[wraith moss]

Amount of AgNo3 will be same as the amount of amount of AgBr( as this is a limiting reaction )
Now molarity of AgNo3 is 0.25 mol/lt
And volume is 60 lt
(1litre=1cm³=1dm³)
So no of moles of Agno3/Agbr = molarity×volume
0.25× 60

[peak steppe]

!!!!! i think i got it! thank you so much duk

[acoustic bobcat]

but number of hydrogens are same in all 3

oxygens differ

[hybrid rose]

Number of acidic hydorgen differs

[wraith moss]

Gald to help you avie!

[acoustic bobcat]

ye

nvm

[small badge]

Hello all. i have a question, it may be a very silly one but i'm asking it anyways. So in the glass slab experiment of refraction of light, when light travels from a rarer to denser medium there is a change in speed of light and it gets refracted right? And also it emerges from the dense to the rarer medium as the emergent ray. My question is, (take it that this experiment is conducted in a dark room and using laser torches). If we somehow fix the torch exactly at the edge of the glass slab, and somehow the light from the torch is projected, can we take it that it travels from the dense medium itself? and it reaches the other side(of the same medium) and finally emerges to the rarer medium. I havent thought it through much but im wondering what the observations are. Thanks in advance.

[solar niche]

Hello ! What's the charge of Asn-Pro-Lys? (pH 1)

[void herald]

can any1 explain electric field due to charge distribution

[acoustic bobcat]

what is e*-2 value

[young fractal]

hi guys, anyone got any tips on how to study organic chemistry... Whenever i try to study it i just get bored and it takes days to complete chapters and efficiency is low..

[midnight crest]

Well that just sounds like procrastination. There will definitely be subjects that you hate. And if you hate it now, most likely you won't like it in the future. Though, I do have friends who have grown to like subjects that they work hard on and become good at. The only thing I can say are the things youtubers would recommend. These are things like removing the connection between you and your phone (putting it under your bed). You'll just have to fight through it like everybody else. You won't just randomly start loving it one day.

[modest oracle]

Something I personally like is watching introductory YouTube videos to have a good understanding of what I am about to study as well as how it is organised. I also watch more specific videos when I keep failing to understand something in my textbook.

The reason, I believe, it works well for me is that only reading and trying to understand is boring, whereas being passive is okay on YouTube videos : you only need to understand the information they give you, no effort made reading.

Then, when you get back to your notes/textbook, you'll feel it's easier and less effort-demanding, since you did half the work to understand what they say watching YouTube videos

[acoustic bobcat]

just study mechanisms and different reagent actions

[woeful talon]

Speed of light changes in refraction due to opt. Density or density?

[thorny gyro]

imo watch "The Organic Chemistry Tutor" on youtube. his videos are really refreshing and moves at a good pace where you don't get too bored but you're still going through the content pretty deeply

[vernal walrus]

help pls

im stuck between B or D

[worthy sentinel]

i will go with D

[vernal walrus]

I know it was D, i went with B :/

can you help me on one more question?

@worthy sentinel

[worthy sentinel]

im sorry for replying late 😩

[vernal walrus]

i think this one is C

but whta do you think?

[worthy sentinel]

wait ill just make a reaction scheme

[vernal walrus]

ok ty

[worthy sentinel]

i think its also D

[vernal walrus]

THANKS

[vernal walrus]

also for this one i did it and its A

[worthy sentinel]

really hahaha it was reduced to secondary alcohol

[vernal walrus]

ok im gonna check

Mmm ok i see how that makes sense

yeah i think you are right

[worthy sentinel]

Yeah, this is giving me PTSD

[vernal walrus]

its alright im done

ty for the help

[worthy sentinel]

was that an exam

[vernal walrus]

no it was a practice quiz for my exam on Tuesday 😢

i got a 19/23

I'm aiming for a 21/23

[worthy sentinel]

Thats not bad. Anyways, goodluck. 🙌

[vernal walrus]

Thank you 😋

[native thunder]

Does mechanical and electrical comprehension fall into sciences?

[thorny gyro]

I guess need some help ?

[native thunder]

Maybe Yes.
I was doing my aptitude test, that was my weakest part😂.
There was this question related to ammeters in circuits i couldn’t understand it.
If I come through it again, ill let u know pal.
@thorny gyro

[thorny gyro]

No prob i'am up 24/7

AI I AM

[native thunder]

👍🏻✨

[boreal bay]

Hi, please could someone help me with the question, I'm really confused on how to answer it, thanks.

[snow geyser]

I am having some derivation/deduction issues with a thermodynamics problem. I want to solve for V2 but cant get it to match with the factsheet. If anyone has the time to explain it to me that`d be appriciated:)

[frank sorrel]

Strawberry plants grow from 'runners' - they are stems with wbuds which can grow into plant just by planting the stems like a rose plant. this is all i know @boreal bay

[vapid violet]

I hope u understand my notation

And handwriting

[surreal shore]

got it! thank you so much 🤩

[thorny gyro]

hi can anyone tell me the minimum distance between two tetrahedral and octahedral voids in hexagonal close packing?

[fallow eagle]

@hoary tusk help me

[young fractal]

thanks alot!

[acoustic bobcat]

i would also go with D

[thorny gyro]

can someone please help me understand this problem thanks!

[boreal bay]

Thanks

[thorny gyro]

Question

Can anyone explain to me this step??

[thorny gyro]

e cross b is eb sin theta so theta here is 90° and that equals eb and now v =eb/b^2 so that equals e/b

[blissful parcel]

Hmm

[blissful parcel]

A-s , B-p , c-q , d-r

[weary quest]

Can some one help me with chem?

Enthalpy of formation

[native thunder]

Yo

Need help

[thorny gyro]

tell me

[broken knot]

hello! anyone here studying biological engineering? I'm currently a high school senior and I'm wondering if it's a good degree to take in university?

[thorny gyro]

It's a great way if you want either to applicate math / phy to Bio or eitheir using bio mecanism to great / respond to pb

lot of jobs around the world

i would say if you don't disgust math/phys you should do some with computer science ^^

[potent shard]

it is known that the mass of a neutron is roughly 1.008u/amu

so why after add 1 neutron the mass added 1.0034 u/amu?

@low knoll

[low knoll]

you answered yourself it says roughly

The measurements of sub atomic particles are not accurate

[potent shard]

it says roughly according to definition but it didnt calculate roughly when adding tho

its still a neutron

😕

it also should have added roughly 1.008u

plz im really confused

[low knoll]

different sources have different masses stated, some say 1.008655 amu, others say 1.005 amu so like idk what to tell you everyone has different measurings

plus

there are two different things

rest mass and moving mass

[potent shard]

ah but there should be a standard source where they both calculate the average mass of an atom using the amu = 1.008 🤔

[low knoll]

https://goldbook.iupac.org/terms/view/N04120 iupac is considered standard source

[potent shard]

but the thing is

on all periodic tables the average mass of carbon is 12.01

whereas the majority of sources state that amu of neutron is 1.008

ah wait

are c12 and c13 the only isotopes of carbon?

[low knoll]

average mass is calculated by considering the mass of isotopes too

[thorny gyro]

Yes

[potent shard]

oh no

[low knoll]

C14 is there too

[potent shard]

i think c14 affected

[low knoll]

what?

[potent shard]

i searched online it said there is c14

[thorny gyro]

That it's isotope

[potent shard]

thanks knight now i figured it out

[thorny gyro]

Keep going

[potent shard]

thank mg too

maybe next time get confirmation

wait

that doesnt affect?

i just mis understood here

im talking about only difference between carbon 12 and 13 where they differ 1 neutron

yet their amu differe less than 1 neutron

oh no!!!!

[low knoll]

there are total 15 isotopes of carbon faygo

[potent shard]

yes

but im only referring to c12 and c13

isnt standard amu of c13 us 13.0034?

[thorny gyro]

How do you know how many isotope?

[potent shard]

google..

[low knoll]

Wikipedia

[thorny gyro]

mhm ok

[potent shard]

c13 is confirmed 13.003355..

[low knoll]

yup

[potent shard]

its 12.011 for c12

[low knoll]

no c12 is exact 12 U

[potent shard]

uhh

it said on gooelgle 12.011

[thorny gyro]

Google says manythings

[potent shard]

it should be 12.011

[low knoll]

thats the total average mass considering the isotopes too

[potent shard]

yes nevermind

[low knoll]

the exact only mass of a single c12 is 12

[potent shard]

i searche c-12 and it got me carbon so nevermnd

[low knoll]

refer this

[potent shard]

so ye its still somewhat wrong tho

13.0034-12 = 1.0034

while neutron is 1.0080

damn

[thorny gyro]

≈1 ?

[potent shard]

what is ~1

neutron is 1.008

~1.008

[thorny gyro]

Ajah

It's so confusing

[potent shard]

if it uses one value in common then it should still use that value when adding 1 neutron

damn

[low knoll]

but the moving mass of neutron differs in each atom and in different states why would it be same in each atom

this is chemistry, nothing is standard 😂

[thorny gyro]

It says it's just 1amu for neutron and proton

[potent shard]

then it still doesnt make sense

since carbon is 12.01 not 12.5

[thorny gyro]

That's why I don't like chemistry

[potent shard]

ugh

this isnt gonna let me sleep

[thorny gyro]

And won't get you anything

[potent shard]

but i still confuse

[thorny gyro]

That's experimental after all

[potent shard]

they cant do math correctly or is it like mg said moving mass

[low knoll]

exactly my point, its not standard

[potent shard]

but its just math and math is standard

[low knoll]

both lmao

[potent shard]

look im better than whoever invented chemistry in math

[thorny gyro]

No math here hahhaha just no logic
So no logic≈ no math

[low knoll]

there is a different physics and a different maths for atoms 😭

[potent shard]

but its still the same in addition right-

[thorny gyro]

dude math in chemestry isn't math, they use symbols to describe an equation but there is absolutly any form of rigorous demonstrtion...

[low knoll]

Nope here 1+1=3 is also possible by magic

[thorny gyro]

Huh

[potent shard]

because bad at math they drop school to become chemist now thats what they get

👎

(guys im joking)

[low knoll]

if you understand hindi you'll like something about chemistry i have

[thorny gyro]

No it's just that it's a formalism based on math to describ there environment

one day i will be motivated enough to put some rigor in there description

[thorny gyro]

It's not about the language or the teacher. It's about the subject

[low knoll]

i meant i had a clip of a student raging in hindi about chemistry~

[thorny gyro]

I did see some teacher telling me that this sum symbol (sigma) is here an alternate sum and not in other cases (zero logic)

[thorny gyro]

That won't help

[thorny gyro]

That shucks

[low knoll]

pain

[thorny gyro]

why don't they just write sum[ (-1)^n ..

Just like they say about dot product lol

there is a writing method to do alternate sum

but no they are either lazy or crazy

[thorny gyro]

They want aesthetics on paper

[low knoll]

they wanna show off that they also have complex things like physics and maths

[thorny gyro]

Well it is complex

[low knoll]

i'ld say its over complicated

[thorny gyro]

Dude they are so hypocrit, hey learn the rules to name the product (500 fucking rules and exception) and when you tell them how do u do for ur paper they tell u how i have a programm doing it for me

Math win it all again

[low knoll]

huh lol

[potent shard]

wait

there are many isotopes of carbon right?

[thorny gyro]

yes

[low knoll]

Yup

[potent shard]

if c-12 is 98.89%

then c-13 cant be 1.11%

[thorny gyro]

^^

[potent shard]

khan academy why

[low knoll]

its 1.109%

[thorny gyro]

They don't think usefull to tell that the rest is in minor part so they tell you it's 0%

[potent shard]

mg why is c12 12.0 amu?

[low knoll]

also they consider naturally occurring isotopes, many of them are lab made

[thorny gyro]

0% in chemestry = a little bit but i'am lazy to determine it so let it be

[potent shard]

isnt c12 <=> 6 proton and 6 electron and 6 neutron where proton is 1.007x6+ 1.008x6 + 1/1823x6

which isnt 12.0

[glad pulsar]

C12 isotope of carbon is 12 amu, universally accepted value

[low knoll]

Well before 1961 every atom had a whole number masses like oxygen was 16 and carbon was 12 but then after mass spectroscopy came and according to that carbon was taken as reference frame, 1 amu isnt defined by proton, its defined by 1/12 of mass of carbon atom

[potent shard]

that isnt too exact-

[low knoll]

yeah but its whats been standardized since 1961 so

[potent shard]

now here the definition of neutron mass contradicts the difference between c13 and c12 smh

[low knoll]

these are my notes, might help

[potent shard]

yes its whole number

[potent shard]

damn people before 1961 dont know math

[wraith moss]

Yo yo yo :/ dont be so concerned with point precision .there r like a ton of factors to consider. (Some being simple factors others being highly advance theoretical predictions about structure of atoms)

[potent shard]

ok i havent get to there yet but im just disappointed that my .45 amu disappeared 😦

(it disappeared in my world of chemistry knowledge)

(and math)

[wraith moss]

I mean chemistry is fun :) extend that chemistry knowledge good luk!

[potent shard]

it is i love

[potent shard]

hey are u there?

is avogadro's number * amu of given substance= 1 mole of the substance?

[modest oracle]

1 mole of a substance = 6.022*10²³ particles of that substance, unrelated to its # of amu

[potent shard]

oh so its unrelated thanks quentin

i was just big confused

so to calculated the no. of atoms in a substance

[modest oracle]

I'm double-checking my answer to make sure I'm right tho

[potent shard]

i take the amount of given substance, convert it into grams and then divide by 1 molee of the substance to get the amount of moles of the mass of given substance

[modest oracle]

Because I must admit chemistry isn't my main study field

[potent shard]

and then i mutiply by number of atoms per 1 mole which is avogadro's number correct?

[potent shard]

aight

sorry i have to go now

bye!

[modest oracle]

bye

[thorny gyro]

helpp

[unique shell]

hii

i need help on this physics question

but i dont really understand the concept of "uncertainty"

[glad pulsar]

as per i have learned the formula answer needs to positive as for combustion its always hf) reactant- hf product

some here who can help?

[native hatch]

Combustion is an exothermic process and for an exothermic process enthalpy is always negative

[glad pulsar]

but acc to formula it is coming to be positive

ik its supposed tobe negaitve

[native hatch]

Enthalpy is calculated as hf product - hf reactant

[glad pulsar]

but for combustion its hf reactant- hf product

this is why im confused

[native hatch]

Maybe the formula was trying to deliver that in combustion hf reactant is greater than hf product

But, I’m sure hf is calculated in all conditions by taking hf of products first

[glad pulsar]

idk man my teacher pointed out its the other way in combustion and its confsuing

[glad pulsar]

i got it the formula i used was applicable for stp condition only oops

[thorny gyro]

help plss

.

[lone temple]

uniform speed

[thorny gyro]

r u sure its not speed

is this correct?

and this

[viscid crest]

hey

[lone temple]

no no it is speed, it will not give uniform speed if the graph isn't a straight line

[viscid crest]

pls dont ask these questions here

[thorny gyro]

alr but why?

[viscid crest]

Delete these.

[thorny gyro]

ohk but i just want to know why

[viscid crest]

5. For the help with homework chats: Asking people to do exams/tests/projects/... for you (with or without payment) is NOT allowed. This server is here to encourage you to study and work, not to let others do it for you.

[thorny gyro]

yea thats what i was thinking

[thorny gyro]

This is my homework and these are a few questions that i am unsure about not my tests/projects/exams.

I wanted to clarify bec my friends say the answers are wrong

[glad pulsar]

js find avg

[viscid crest]

Dont answer

[viscid crest]

If you have a conceptual doubt, feel free to ask.

[thorny gyro]

ye thats what i did

I added both 160 and divided by 10

[glad pulsar]

i dodnt lmao ;)))

[thorny gyro]

I asked a mod if my reason is legit

if they say it isnt and I have to delete I will surely do that

also pls dont mini mod ask a moderator or any other staff

to take action

[quiet python]

Hai ! Please, next time, don't ping me, I would really appreciate 🥺
Good luck for ur work !!

[thorny gyro]

rlly sorry I was trying to type @royal vigilceColllegenerds

FUCK

SHIT

SORRY

[quiet python]

It's okay it's okay no worry !

[potent shard]

do ionic bonds connect and then form a neutral compound?

[native haven]

Please can anyone explain me what is the 6 looking symbol in the formula E=6/C0 here!!

[celest gorge]

it is written E= σ/ ε0, where σ is surface charge density and ε0 is constant ( permittivity of free space).

[native haven]

I can see C not in the denominator not epsilon not

[celest gorge]

i guess it may not be clear in your document, but it's the general expression, what i wrote above. (you can look on web)

[quiet reef]

the 6 looking symbol is called sigma , its also the surface charge density..charge/surface area

[native haven]

Ok thanks

[rugged apex]

help pleaze

[native hatch]

I guess b

[rugged apex]

if b, then why not a,c,d

help!!!!!!!!!!!!!!!!!!!!111

can anyone send a detailed solution for this assignment??? please.

[copper mural]

Can anyone help with ques no. 11.....

In the solution the formula used is dH = dU + ∆ngRT ......but this formula as I have studied is used when a chemical rxn is taking place ......but vapourisation is physical ....? Can anyone help with this Plz

[lone juniper]

Can someone tell em why did we take the derivative of dx/dt as a negative velocity in case of motional EMF

[modest oracle]

Put shortly and with absolutely no rigour, the emf "resists" the variation of magnetic flux. Therefore, for a positive variation of flux in a direction, there will be a small positive emf in the other direction (to resist the sudden change of flux), which means a small negative emf in the same direction as the flux variation

[modest oracle]

Hope it helps. I'm kind of tired so it's totally okay if you don't get it based on what I wrote. I'd be glad to help after a good night of sleep if that's the case

[lone juniper]

This clears actually sth hmmm lemme try using my brain again but thanks for this one

[modern terrace]

Am I doing number 6 right? I think I'm meant to cross things out but not sure 😕

[lone juniper]

O yeh sure sleep is important 😌if I don’t get the thing I will ask thanks

[lone juniper]

Ig u on the right track and maybe it will look like this? U can cut out the VOLUMES since they same

[modern terrace]

thank you!

[lone juniper]

Np : )

[acoustic bobcat]

your'e studying for neet i would recommend not solving papers before 2016 as they are out of ncert

would someone mind to explain im not so good at botany

[copper mural]

Ok.....but still I wanted to know where am I going wrong

[acoustic bobcat]

i think delta n is zero so dU becomes equal to dH, n is for gaseous molecules as far as i have studied

Δn=number of gaseous products - number of gaseous reactants

It's at 100 degrees so it might be already vapour so 1-1=0 therefore +40.66 = du + 0RT

That's what I have to say

[copper mural]

It's liquid to vapor conversion .....so there ∆ng = 1-0 = 1 and the ans is 37 approx. ....anyways thanku for helping I think I have to learn this particular case

[acoustic bobcat]

yeah makes sense

maybe what you ticked is wrong

answer is C

[copper mural]

Yeaah ...sry for that ...thnku for helping🤗

[outer wedge]

Can anyone please help me with this?

[sick shuttle]

yes, you can cross V1 out since V1 = V2, because you just multiply the whole equation with 1/V1

and then you are left with P1/n1xT1 = P2/n2xT2

[modest oracle]

Yup

[modest oracle]

@outer wedge check your dm's

[outer wedge]

Yes

Ok

[thorny gyro]

The Values are + and -

[acoustic bobcat]

welcome fellow aspirant

hope you get selected this year,all the best 👍

[cyan prairie]

why the Electric configuration of tungsten is 6s^2 5d^4 n, not 6s^1 5d^4?

[sinful robin]

bcs 6s needs to be filled with electrons before you can fill 5d

you can follow this scheme

[sinful robin]

total mass, as in de sum of those two masses?

If so, then i guess this would be it
Not sure tho

[maiden thicket]

https://cdn.discordapp.com/attachments/729656575844810864/878698906739941386/unknown.png

can you help me with part c pls

part a 14.7m
part b 4.1m

i just dont get part c

[thorny gyro]

Hi everyone, I am looking for a colleague we can support each other, if anyone thinks, please write, thank you

[boreal spear]

i wana start with quantum computting how

if you know'

[acoustic bobcat]

isn't it literally the same thing?

anisole is metoxybenzene

[sinful robin]

indeed, but doesn't anisole have priority in naming over just a benzene ring?

[outer walrus]

It does

[copper mural]

Hope so ....best wishes to you too ❤️❤️

[acoustic bobcat]

okay thanks

[acoustic bobcat]

👍

[rugged apex]

help please

[haughty gale]

HELPPPPPPPPPPPPPPPP

[thorny gyro]

the answer is 1?

[wraith moss]

Did you do the question?

[wraith moss]

Two quantities can be equated only when they hav the same dimensions
Hence
Dimensions of C will be equal to dimension of t(time)
Like that..
[b/t+c]=[V]
[b]=[V][t]
=[L]. ([V]=[LT^-1])
[at]=[V]
[a]=[V]/[t]
=[LT^-2]

[haughty gale]

not all, i couldnt do all of them but i got the solution pdf now 🙂

[wraith moss]

Oh oki oki

[balmy timber]

u can calculate them by volm=densityxmass

?

[haughty gale]

@balmy timber ur really weird bro , do it again and I'll tell the mods

[balmy timber]

sharba wut happ

[haughty gale]

What's sharba?

[balmy timber]

i told the ans

wut happ

ok my bad

[haughty gale]

Wait

[balmy timber]

how many arms do u know

[haughty gale]

Are u

No way

Adma???

[balmy timber]

no

🤣

[haughty gale]

Ur sus bro

[balmy timber]

As u say

[haughty gale]

Ook

[acoustic ibex]

Yo any high schoolers taking AP Bio don’t need any help rn but would like a study buddy later on

[haughty gale]

A person is standing on an incline plane. When he projects a stone up the incline, he has to project at an angle of 30 degrees with incline to achieve maximum range. What should be the angle with incline at which he should project thestone down the incline to achieve maximum range?

[boreal spear]

so whos going 2 11th grade

[balmy timber]

30 degrees

[stable sand]

is this statement correct
The distance of an object from the Pole is always taken negative

[pale girder]

@thorny gyro hi

so basically

we have been taught only basics of this for now but im confused

umm wait

[thorny gyro]

Okay

[pale girder]

here is a para from my book

i can send the whole para

i dont get it from book i tried on yt also

[thorny gyro]

Okay. What is troubling you in this para?

[pale girder]

basically when they start considering the 2 compounds and shwo examples of how oxidation state is found

i struggle there

2nd para

[thorny gyro]

Is there confusion in how oxidation states are given to each atom?

[pale girder]

yeah

and also

sorry my brother came

[thorny gyro]

Group 1 elements always show oxidation state +1.
Group 2 elements always show O.S +2.

[pale girder]

i also have trouble in knowing which oxidation state is to be found by which method as its stated

u can either take outermost orbital electron as the state
or 8-no of outermost electron

[pale girder]

is it all fixed? like from group 1-18?

[thorny gyro]

No. Valency of 13-18, p block varies that's why OS varies.

[pale girder]

okkkkkkkkkkk

[thorny gyro]

Group 1 and group 2 shows maximum OS that is equal to their group no +1 and +2 respectively

[pale girder]

im still soooo confused bout this

i think i have reached saturation

like my mind cant understand anything

[thorny gyro]

How I find is for ex.
Na20. Let OS of O be x. Na will always have +1 oxidation so take
1×2-x= 0.
x= +2.

Why we take x because p block can have many oxidation states. Sulphur can have oxidation states ranging from +6, +4 depending on who it's attached to

Oxygen oxidation state is mostly also fixed to -2( exception being peroxide, superoxide)

[pale girder]

yeah i saw this on yt

na is in group 1 so its +1

ok

[thorny gyro]

Yes. +1

[pale girder]

yeah its variable

ok

changing

@thorny gyro u have cleared my mind so much rn

thanks a lot

[thorny gyro]

Okay. I hope I was some help

Keep studying.

[thorny gyro]

how would mono nitration take place in this compound?

[hybrid rose]

COR is deactivating

• Huge sterric

So I think nitro would be on para of second benzene

@thorny gyro

[thorny gyro]

yepp thanksss

[haughty gale]

4For a person walking on ground, rain appears to fall vertically When he doubles his speed, the rain appears tomake angle 8 with vertical. What will be the angle made by the rain with vertical if the person triples his speed? Please send the solution

[wet trench]

i think this might help ya with the working process:
https://brainly.in/question/29879075?tbs_match=1

[haughty gale]

Thanks @wet trench

[potent shard]

common charge?

magnitude of group 17 is -7 but why 1 up there

hi

ye

ye

cant i do 8-7 = 1

to obtain common charge i take the ones digit of the group and - by octet?

ye thats cation

but from 13 back to 1 it is different

whats the differenece between common charge and magnitude of charge

their numbers are different

ok

i quit khan academy ima study from books

[potent shard]

any recommended books for beginner chem

[haughty gale]

Why ?

[potent shard]

because uh

[potent shard]

what determines the sound of a phenomena?

[marble parcel]

hey @potent shard its a long description but to understand it you can visit this website : https://shawnohurley1.wordpress.com/

[marble parcel]

yes this one it is too good I highly reccomend: chemistry by viraf J .dalal

there u go

[potent shard]

thank you sir

[marble parcel]

yes

sure

[marble parcel]

u in sophomore ?

[potent shard]

no sir im in middle school

[timid raptor]

Hi, this is chemistry question. And i want to know why using alcohol is not accepted as an answer for c)iii)

Because alcohol + carboxylic acid -> ester + water. And water can be tested using anhydrous copper(ii) sulfate.

[cunning crescent]

probably because there will be water in the acid solution before reaction

[timid raptor]

ooh alright thankss

[potent oracle]

I will start learning chemistry soon who wanna join me

[jovial totem]

anyone studies physics here? 😄

[celest gorge]

yes.

[jovial totem]

@celest gorge nice 👍 we might help each other

[potent shard]

hi sd do u have any recommendations for beginners physics? book recommendations or courses to enroll?

[celest gorge]

hello. fundamentals of physics by resnick and halliday is a good beginner book.

[potent shard]

thank you sir my apologies for the ping

[celest gorge]

it's ok. np.

[pale girder]

hi

i have a doubt

in physics

in dis ques tehy ask u velocity in 3rd part

but the book took out magnitude

why?

[cloud igloo]

um. the components which they've used is of a vector.

the ans is the resultant and that's why direction isn't specified

[pale girder]

but wudnt u add a unit vector ro smth

[cloud igloo]

no. Ig cause we've taken its components. moreover in these type of question ig there's never the direction that we specify

[pale girder]

that ik but they took out magnitude

ok

ok

ig its solved

[cloud igloo]

yea

[pale girder]

ty @cloud igloo

[potent shard]

wait may i ask

what is 98ms^-1

is that inverse or exponent

[cloud igloo]

it's the unit

metre per second

[potent shard]

what about ^-1

[cloud igloo]

that's how you write it

[potent shard]

i thought its just 98m/s

[cloud igloo]

m/s

nah just a diff approach to the same thing

[potent shard]

is speed also ms^1 or just velocit

[cloud igloo]

speed and velocity both have the same dimensions

velocity just have a direction specified to it

[potent shard]

yeah

im asking about the unit

[cloud igloo]

it's necessarily the same thing

[potent shard]

also for physics is it recommended to take hand notes or online notes

i really dont feel like taking hand notes ever lol

[cloud igloo]

you just gotta practise questions. there are many that have a diff approach than just putting it into formulas so I recommend you practise as much as possible

[potent shard]

do u take notes for physics

[glad pulsar]

Kid we take hella notes In all subjects

[potent shard]

can you not kid

hand notes or onnline notes

[glad pulsar]

Depends on u, notes its for learning not aesthetic prepare what suits u kid

[potent shard]

stop call me kid plz

[glad pulsar]

Huhuhuhu huhuhu okay ||kid||

Last time hahah

[potent shard]

thank man

[magic delta]

hi

can anyone help me with definitions?

[thorny gyro]

isnt that thing in ur text book??

[magic delta]

well we do have a lab manual

but for 6 marks i hve no clue tho

[thorny gyro]

well...its science. It's not about the number of pages. its the content. write whatever u leanrt and know about the simple pendulum starting from the structure then the usage. what it shows. and how it works. and stuff like that. u dont have to write a lot of pages just write what u learnt.

[stoic sequoia]

guys what are eddy currents?

[wet trench]

This question is for 6 marks?????

So basically write the definition that's in ur book

And for the rest of the 5 points, write how it works

The principles involved

And its uses

And also mention bout the galelio thingy

I think it shud be enough

[thorny gyro]

1/x = x^-1, so m/s = m.s^-1

[magic delta]

Tq!

[potent shard]

Thank you sir, so it’s an exponent

[cunning crescent]

Yeah

[lone juniper]

Yall can someone tell me how to solve this…? And also what would be the name of the reactant?

[sinful robin]

all i know is that i think this will undergo an elimination reaction, E1 to be precise, so in the end, you would make an alkene

the major product is the most substituted alkene (Zaitsev's rule)

and be beware of methyl-shifts that c

might happen

[outer walrus]

Wouldn't there be a hydride shift to form tertiary cation?

[sinful robin]

yeah, could be, i was looking for the general term, but in my language it's different and i didn't find the translation

so yeah you're right

[dusky lava]

Eddy currents are basically small magnitude currents generated when a metal is subjected to variable magnetic field. They're produced in significant amounts in motors and transformers

[outer walrus]

Haha, I was just confirming tbh, I did this 3 years ago in high school so it's bit fuzzy now

[sinful robin]

organic chemistry is one of my courses, still had to look it up tho, so it's a bit fuzzy for me too 🥲

[outer walrus]

It's alright haha we all have those moments

[sinful robin]

but exam is friday 🥲

[outer walrus]

That's 5 days of prep, you got this

Good luck!

[sinful robin]

thanks :))

[stoic sequoia]

ooh tyyyy

[stoic sequoia]

your not alone mate

[dusky lava]

You're welcome buddy

[sinful robin]

only advice i have is start from the basics and make exercises about that, and then gradually built up till where you are supposed to know the subject

[potent shard]

does anyone here know the boook "fundamentals of physics"

[thorny gyro]

Halliday resnick?

[potent shard]

yes

do u think it is basic

its sample questions and examples are complicated

[thorny gyro]

they are complicated

The theory however is excellent

[potent shard]

im trying to take notes from it, i know nothing about physics

in chapter 2 there already is calculus

[thorny gyro]

you should probably refer to some other book for exercises

[potent shard]

😭 i dont get it

are there any more basic physics book

[thorny gyro]

only use the Halliday resnick workbook if your calculus is strong

hmm

[potent shard]

i am in middle school i dont know much calculus yet

i know how to differentiate

[thorny gyro]

I don’t know many books for your thing

I’m actually a sophomore

[potent shard]

my thing?

i just want basic physics book

starts from 0

[thorny gyro]

I mean learning situation
Considering you’re kinda starting young and basic

[potent shard]

i can do math up to algebra I

[thorny gyro]

Maybe try NCERT class 11 questions

[potent shard]

ok

[thorny gyro]

I’m sorry, I’m not of much help
But
All the best!

[potent shard]

thank you

[modest oracle]

I looked it up, and it seems to be used as a textbook for undegraduate physics courses. In college, physics heavily relies on calculus. If you know nothing about calculus, maybe you could :
a) Pick another book. If you're still in middle school you will most certainly have lots of trouble reading and understanding what Fundamentals of Physics contains.
b) Leave Fundamentals of Ph. aside for a little while. To read it, you must first learn about college calculus : vectors, 1D derivatives, multidimensional differentiation, multidimensional integration, ... I'm warning you, it's tough stuff compared to your current level. Only then can you get back to the physics book

[potent shard]

if so, do you recommend any text books that prety much starts from 0 that includes a variety range of different areas in physics?

[modest oracle]

Unfortunately I don't know any that does. All the books I've used take it from granted that you know calculus, because that's what physics is based on

[potent shard]

ok, thank you

[modest oracle]

Just a question, why do you want to learn from a college textbook that early ?

[potent shard]

I asked for recommendations on basic physics books and that was what I got

Huhu

[modest oracle]

Ohh ok

Yeah that's not of your level at all (for now) then ^^

[thorny gyro]

Can anyone help me in my Machine learning assignment 🙂
Ping me

[potent shard]

anyone got basic physics book..

[wind ingot]

are these options right cause v represents velocity right so saying that it represents acceleration itself is wrong right

im not sure thats why im asking you guys

[thorny gyro]

I don't know how you call these ions in english, but hydroxyd is OH-, ok. But why is oxonium H+, isn't it supposed to be H3O+ ?
The equation is correct but I believed they want me to find H3O+ + HO- => 2H2O and the correction is totally different

[wet trench]

See H+ ions can't exist independently so they exist with water
H+ + H2O ----> H3O+ i.e. hydronium ions

So if u write H+ or H3O+, it's the same thing

[dusky lava]

Yeah right, or call H3O+ as an aqueous solution of H+ ions, either way is correct

[thorny gyro]

Ok, so OH- + H+ = H20 is juste a simplified version for OH- + H3O+ = 2H20, we just deleted 1 H20 in the general equation ? Thanks!

[wet trench]

kinda yea

[dusky lava]

Yeah that's the gist basically

[random citrus]

anyone know biochem?

[delicate zinc]

can anyone teach me how to name them according to iupac: mClCH2C6H4CH2C(CH3)3

[native thunder]

Can someone help me how to figure out resistance in a parallel circuit please.

[gaunt dome]

On this parallel circuit the current that passes on A1 gets divides into 2 different currents, one passes thorough A3 and another thorough A4. That means that the original current provided by the font is now divided into 2 different currents, so i1 = i3 + i4, since no current is lost on the process. Usually, the way the current is divided is inversely proportional to the resistance on that path, i = V/R. In this case, both bulbs have the same resistance, so both currents are the same. That means that the original current (0.4A) is now equally distributed between both paths. So A3 would measure 0.2A, the same as A4 (and A2 would measure 0.4A).

Although the question is more about current in parallel circuits than resistance. Multiple resistors in parallel can be seen as 1 resistor, for that you need to find the resistance of this equivalent resistor. The equation for this is: 1/R(eq) = 1/R(1) + 1/R(2) + ... + 1/R(n). English isn't my first language so the notation might be different from the one used on your school.

[runic lodge]

I have a question

Does anyone know what’s the function of the PFA in cell culture

i know it’s used for fixation

But what’s the specific function of it

[glad pulsar]

cant seem to find where the concentration is mentioned as used ppls help

[wraith moss]

The question says Decimolar solution.
And concentration of Decimolar solution is 1/10th M (0.1mol/lt)

[gray schooner]

does anyone know some good sources on redox reactions?

[glad pulsar]

hhahah figured that out js after postin oop

[wraith moss]

Oh cool cool

[fossil violet]

hey darlings, i need some help with biology. my assignment is that sex-linked diseases are more common in males than females. so i am using red-green colour blindness (Deuteranopia) as an example. I need some sources with data that proves this. thanku ❤️ 🤩

[acoustic bobcat]

I don't understand, can someone help me please?

[late spruce]

The question asked about DNA sequencing. In other words, cytosine should be opposite to guanine base and guanine should be opposite to cytosine base. Thymine should be opposite to adenine base and adenine should be opposite to thymine. And when you string it, the CGAAUCCGUU sequence is revealed.

[acoustic bobcat]

thank you

[late spruce]

You're welcome

[thorny gyro]

in anion and cations which one is negative and positive. i have seen that in some situations they even become the alternative

can anyone solve c and d for me? its urgent

[wet trench]

Anion is negative and Cation is positive. Whereas, Anode is positive and Cathode is negative

[thorny gyro]

oooh thank u thank u @wet trench

[tired abyss]

hey guys i have this kind of questions, and i was wondering if anyone found a yt tutorial or smth about this

we need to make a graph

[cunning crescent]

You can do this manually by entering the coordinates and drawing a line from origo to the points

[gaunt dome]

i usually use scidavis

but you can use geogebra, matlab, excel, even word to do it

etc

[tired abyss]

Oooo but I meant on how to do it yk...

[tired abyss]

Thanks thoo

[modest oracle]

@cunning crescent gave you the way to do it.
Draw both axis, agree on a certain scale for each of them, draw dots at the appropriate coordinates, and link them all with a line

[tired abyss]

OOHH omg sry evaa! Thanks u guys!

[native thunder]

Cheers mate. Appreciate it

[quiet harbor]

Hi, can someone explain how I determine my expected values in a Chi-squared test? The example problem is about UV patches and how they effect outcome of dominance contests between lizard males. I can send a picture of the problem if that helps.

[hollow star]

1. aB=2aA ; 2) aA=2aB ; aB is acceleration of B and aA is acceleration of A

[hollow star]

I have written the answer if you need complete solution drop a message

[cobalt kelp]

HI! Can I ask someone to explain how the structure of a biomolecule influences its function? Thank you!

[upper siren]

Can anyone help me with anaphase and telophase of mitosis?

[gray slate]

I might be able to help! My physiology class covered the cell division topic briefly last semester.

[thorny gyro]

Can someone fill this in? I have to do a lot of other work, and filling this in is easy but time tasking ;-: (note: class is anatomy and phis)

[potent shard]

d = vot+at^2/2, at = vf - vo so d = vo * t + (vf-v0)t/2, but in the book it stated that distance could be calc using the average velocityt, which is only (vf-v0)t/2 in this case, where did the distance without acceleration (v0 * t) go?

[hollow terrace]

May i ask, between Na2O and MgO, which one is more unlikely to dissolve in aqueous alkali?

[potent shard]

@thorny gyro

[potent shard]

^^

HELP!

[thorny gyro]

d becomes equal to [(vo+vf)t]/2

@potent shard

[potent shard]

oh

i mistake + and -

NVMVNVMVNVMVNVMV

THnks

[thorny gyro]

Does that helps?

Cool

[potent shard]

YE

[pale girder]

ans wud be d?

nvm

it was a

i messed up

took cross prod

[modest oracle]

Ans a

[pale girder]

hmm ty

[potent shard]

d = v0*t+at^2/2 but is also = (vf+v0)/2 * t right

i made up a problem

a ball is thrown up with v0 of 10m/s, calc the distance the ball travelled

so v0 = 10m/s, vf = 0m/s, a = -9.8m/s

=> t = vf-v0/a = 0.98s

d = v0*t + at^2/2 = 10 * 0.98 + (-9.8 * (0.98)^2)/2 = 5.09

but d = (vf+v0)/2 * t = 10+0/2 * 0.98 = 4.9

help

helpppp

[dusk nymph]

Well first find the time

Then find the distance by the first formula

[potent shard]

here

i used both formulas they resulted in different outcomes

[dusk nymph]

To be honest i usually use the first formula i get the answer right

I dont think i have seen the second one alot

[potent shard]

IS THIS BOOK WRONG OR STH

[thorny gyro]

is this correct??

[potent shard]

yes

oh no

[thorny gyro]

no it isnt

its not d=vf+v0/2

[dusk nymph]

So im not the only one who thinks that

[potent shard]

in the book it says so huhu

let me try using algebra to derive

[thorny gyro]

the correct equ is d=(vf^2-v0^2)/2a try this equation

[dusk nymph]

Another thing

[thorny gyro]

its fo rthe second one not first equation

[dusk nymph]

How much is the time ?

[potent shard]

0.98s

[dusk nymph]

U sure?

[potent shard]

yeah?

vf = vo+at

[dusk nymph]

0=10-9.8t

[thorny gyro]

thats correct

[potent shard]

lol my brain

[dusk nymph]

10÷9.8

[potent shard]

i thought 10/9.8 = 0.98

lol

[dusk nymph]

.. .

I knew there was something wrong

Its should be like

1.02

And why are u using 9.8 instead of 10

That would make stuff easier

[potent shard]

uhh

cuz

idk

precision

[dusk nymph]

Just use 10

No one will kill u

[potent shard]

okok

[dusk nymph]

Unless ur teacher said u have to use it

So now u have the time

[potent shard]

ok thanks

[dusk nymph]

Get the distance by the first formula

[thorny gyro]

10 and 9.8 are correct. use one when another is wrong

[potent shard]

wdym

[thorny gyro]

displacement or distance??

[potent shard]

stop correcting smh i didnt involve direction to make it a vector quantity

[dusk nymph]

The question wants the distance

[thorny gyro]

oh

but that formula cant give distance. displacement can be distance. but distance cant be displacement

im just reminding thats all

so u dont get confused

[potent shard]

that formula doesnt need direction to solve it so why cant it give distance

[thorny gyro]

thats formula is made for displacement

[potent shard]

come on be flexible

[dusk nymph]

Just find the d

[potent shard]

it said d not s

[thorny gyro]

aah ok

[potent shard]

so we can use for bothhh haha

thanks guys

[dusk nymph]

No problem

[misty dove]

ayo peeps

i need some help

in organic chem

[frail ravine]

b)ii) pls

[cunning crescent]

It's usually better if you just post what you need help with, otherwise we won't know if we actually can help you or not :) you'll get help faster that way

[pale girder]

D?

[pale girder]

nvm

[pale girder]

What are the possible angles of projection with same velocity to have same range

someone

[cloud igloo]

Make the angles complementary. Meaning their sum should be 90

[pale girder]

hmmmmmm

op

can someone tell these , im really confusing myself here between dot and cross

i answered this way :

q1- 1
q2-0
q3-1
q4-1
q5-not sure
q6-not sure

[cloud igloo]

I cross j is k.
I dot k is 0

[cloud igloo]

I cross k is minus j.
k dot minus j is 0

[pale girder]

ok ok

gots it

[magic delta]

hello

can anyone teach me?

[potent shard]

north's 3.25km cancells out south's 1.50 km, so we're left with 3.25-1.50 north. draw a triangle containing 2 vectors: the north and the west vector. using vector addition, u can find the resultant displacement's magnitude. the direction is simply northwest.

where there are 3 components, they tend to cancel out each other and leave u with 2

correct me if im wrong

IM PROBABLY WRONG LOL

[magic delta]

i mean the first part looks aight

[potent shard]

the direction is right

[magic delta]

like that?

[potent shard]

use trigonometry

the short leg of the right triangle is 3.25-1.5

long leg is just 4.75

so magnitude using pythagorean

sqrt. 1.75^2+4.75^2

5.06 meters northwest

@magic delta

[magic delta]

woah

[magic delta]

this should be the resultant displacement's magnitude correct?

[potent shard]

yes

the direction is northwest

[magic delta]

for some reason my answer sheet saying that the direction is a negative value tho

[potent shard]

west is negative

u can say negative

[magic delta]

wouldnt you need to find the angle?

[potent shard]

what angle

i thought they are asking for magnitude

vectors are weird

[magic delta]

yeah

[potent shard]

IDK MAN SORRY

ill probably learn a bit more about it then i can answer u later

[magic delta]

issokay at least we got the displacement tho lol

[magic delta]

yeah sure!

[potent shard]

did i get the magnitude right

[magic delta]

yep

[potent shard]

yay cool

[magic delta]

5.06 km btw

[potent shard]

yes, km

[harsh eagle]

theta is equal to tan raise to the power -1 *(19/7)

is the ans correct?

[stoic sequoia]

guys what is the Z for CCP? [cubic closed packing]

[supple vigil]

hi! i have an IB chemistry related question, could anyone help me?

[cunning crescent]

what is Z? coordination nr, packing factor, amount of atoms or something else?

[stoic sequoia]

coordination no.

[cunning crescent]

coordination nr for ccp/fcc is 12

[stoic sequoia]

ohh okk tyyy

[cloud igloo]

the visible region is the Balmer so it should land on 2.so ans should be 3

[supple vigil]

ahh alright, thank you !!

[eternal basin]

sorry to ask for this, I'm from Argentina. Right now I'm studying mechanical deformation with stress over strain hooke formula. How I am I supposed to calculate the elastic energy of a two spring system? I guess I have to use e=1/2 k x squared. Somebody can give me a hand?

[bold kelp]

how long does it take to finish 2 lessons of grade 10 can i finish 3 lessonsper day?

[bold kelp]

hi

why ?

ohh

change pas

[thorny gyro]

you want to finish 3 lessons or 3 grades? ha ha lol lol

[bold kelp]

3 lessons

lol

[thorny gyro]

well..it depends on the subject..

[bold kelp]

science

[thorny gyro]

yes, you can finish 3 lessons, but i think you cannot do them from scratch, you should have studied a little bit or the whole chapter before

[urban socket]

Can anyone help explain what a radius vector is?

I know that it’s the distance from the center to the particle performing the circular motion but wouldn’t that just be the radius?

[hollow star]

vector should have a direction magnitude of radius vector is radius and direction is outwards from the centre

[vast pewter]

can someone help me with this?

plz

I am getting the answer A for some reason. But the mark scheme says C

[wraith moss]

Convert them to metres. It will make the calculation easier.
5×10^-2/5×10^-6 shd give you 10^4

[vast pewter]

oh could you let me know where i went wrong

i turned 5cm to 50mm

then 50/5 is x10

if its fine could you let me know where i went wrong

[wraith moss]

Hmmm. Thats micron not milimetre 😅

[vast pewter]

ooofffff

i used millimeter instead of micrometer

i see

thank you so muchh

[wraith moss]

1µm=10^-6 m

[wraith moss]

Oh! Happy to help!!

[potent shard]

i am very confused

it said that blue part means negative acceleration

why is it slowing down

is it because the straight line is the shortest line and the curve is longer than the straightline so its considered slowing down

at the bottom curve from 7-10s interval it said its speeding up

[analog jolt]

module?

[thorny gyro]

its speeding up from 6 to 9 imao

and its going backward

Its displacement and time graph?

[potent shard]

how do i know if its speeding up

line of tangent compared to prev. slope?

[thorny gyro]

yea and the position is negative so it going backwards

[potent shard]

im just comparing change in velocity so yeah doesnt matter

[thorny gyro]

stop reacting to me im already pissed off

[potent shard]

what is module

[analog jolt]

have u taken a big 5 test

[potent shard]

i only know modulo arithmetic hehe

[thorny gyro]

pls shut up im already warned i dont wanna talk with u anymore

It stopped at the top point at 4m and the it decreased it's acceleration and then it started accelerating again. Since the acceleration went below the axis and is negative it tells that it went to opposite direction and then increased its acceleration again

[thorny gyro]

Question book

[thorny gyro]

but its decreased the acceleration at 9 sec right

Yes then it started increasing

[potent shard]

no its a parabola it should be the same velocity??

UGH

[thorny gyro]

What

The graph doesn't show the path of the object

so the velicity is 2 m/s for first 3 sec. and - 2m/s after it until 6 sec

[analog jolt]

🥲

[thorny gyro]

the same goes underneath the x axis. so it went to its original position imao

[potent shard]

the magnitude of slope is equal

[thorny gyro]

Uhh I don't get what are you trying to say

[potent shard]

so the velocity should be the same just in different direction

[thorny gyro]

where did u learn abt slope and tangent in 8th grade??

[potent shard]

so the slope's absolute value is equal for time intervals 7-9 and 9-11

[thorny gyro]

You know that it's not the path?

[potent shard]

im not talking baout the path wtf

im talking about the velocity is equal

[potent shard]

i learnt it outside school

[thorny gyro]

Yeah it's in the opposite dirn ok

[potent shard]

yeah

[thorny gyro]

its parabola so yea the velocity is same

[potent shard]

yeah

[thorny gyro]

the magnitude is same and oppsite

im not sure

[potent shard]

magnitude is always +

[thorny gyro]

Yes negative indicates opposite direction

[potent shard]

interestingly mass can be negative unaturally

[thorny gyro]

i meanits same in magnitude but oppsite in direction too

[potent shard]

so their speed is equal

[thorny gyro]

mass cant be negative unless it moves

[potent shard]

no its like some kind of abnormal

u can search it up negative mass

[thorny gyro]

i dont think it talks abt speed it talks abt velocity. u see velocity and speed r different

[potent shard]

not a dedcution of mass but like negative mass

[potent shard]

their velocity's magnitude is equal

the slope's absolute value indicates speed

saince speed cannot be -

[thorny gyro]

no the velicty is not same. the acceleration is same

[potent shard]

i thought in position/time graph slope = velocity?

[thorny gyro]

the velicty changes cuz the acceleration is same

[potent shard]

i mean like

on symmetrical points of the parabola

the spid is same

ye its acceleration is thereby the same

anyway thsx

[thorny gyro]

np

[acoustic bobcat]

4

for bcc 2

for scp 1

ccp is fcc

basically

[stoic sequoia]

tyy

[native thunder]

Will the answer be 0.4A?
Question 3.

[potent shard]

the slope of tangent line in a non linear graph indicates whether the object's velocity increases or decreases right (acceleration)?
like compared to the previous line of tangent
when dealing with instantaneous v

[zenith turret]

0.4

[shell drum]

This would depend on the x and y axes

if the graph is distance vs time , slope would give velocity and if it's velocity vs time, slope would give acceleration

[potent shard]

yes distance over time

im asking about when the graph is curve

[shell drum]

slope gives velocity then

at any point, slope of tangent gives instantaneous velocity

[potent shard]

so if slope of tangent is less than previous point means slowing down?

[lean kraken]

hello everyone

anyone willing to help me with chemical engineering calculations??

[shell drum]

Yes

[potent shard]

Thx you

[buoyant quail]

Hey guys, anyone can help me to get the solution for this exercise? Would appreciate that too much. The answer is: mg/tan(theta)

[loud rivet]

see looking at this free body diagram you can easily see that for the mass to be in equilibrium Tcosθ=F and Tsinθ=mg
then you divide the 2 equations to get tanθ=mg/F
ie F=mg/tanθ

[buoyant quail]

Woow, thank you for help :3

[marble parcel]

The website is Unsafe !!

[loud rivet]

I saw such a link earlier when someone got hacked

[marble parcel]

exactly

can anyone from mod or admin

delete it !!!!

[loud rivet]

I think they got hacked so

i dont think they should get muted just someone delete these messages

[marble parcel]

yeh i clicked, pc showed me its unsafe so

[marble parcel]

yes

should i tag the peeps or I dont know ?
u know ?

[loud rivet]

maybe we should

[marble parcel]

yes

[spark lodge]

is terminal p.d equal to total p.d. across loads in a circuit?

[loud rivet]

see for this basically find the magnitude of vector B then find the unit vector along A ie (A^) by dividing A by its magnitude then multiply |B| and (A^)

[stoic sequoia]

guys what is self induction and mutual induction?

[lyric patrol]

Hey guys i need help. Pls can anyone spare some time to help me with this physics problem? Thanks in advance

[golden creek]

use fxcos angle

plot it in an xy plane

[stable sand]

why is convex lens called converging lens

[tame kraken]

Self Induction= If you take a single circuit and you keep on changing the current through it, an emf will be induced in the same circuit which will oppose the changing current in opposite direction according to the Lenz's law. Mutual Induction=You take two circuits .

[cloud igloo]

hey can anyone help with the e z configuration in alkanes

yk how to figure it out

[thorny gyro]

Number the groups 1 and 2 according to their priorities on either side of alkane. If 1 and 1 group are on the same side then it's Z. If 1 and 2 are on same side then it's E.

[cloud igloo]

Thanks

[fleet fox]

the 2nd one..

[wicked notch]

you can prove that v = 2v1v2/(v1 + v2) < 2v1

[wicked notch]

because v2 / (v1 + v2) < 1

[magic delta]

hello can anyone help me with this?

[wicked notch]

It's 70 m/s^2

[magic delta]

but its actually 11.4 m/s^2 in my answer sheet

[wicked notch]

ah

it's 5.7

not 5 x 7

so it's 5.7 x 2

[shell drum]

Because a ray of light passing through any point in the convex lens tends to converge at a fixed point (focus) at a certain distance from the center of the lens (focal length)