Vectors, given dot and cross product equations | iTeachChem | Page 1

cobalt stump Jan 30, 2025, 2:44 PM

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I haven't looked at the solution, I want to know how to think about these types of problems

somber bearBOT Jan 30, 2025, 2:44 PM

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<@&1227988399579730072>

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Note for OP

+solved @user1 @user2... to close the thread when your doubt is solved. Mention the users who helped you solve the doubt. This will be added to their stats.

cobalt stump Jan 30, 2025, 2:44 PM

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Not sure what to do with that second equation

silver sparrow Jan 30, 2025, 2:46 PM

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Note that c vector and cxa are perpendicular to each other.

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So basically magnitude of b vector has perpendicular components c and 2(cxa)

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Now just do $\sqrt{\abs{\vec{c}}^{2}+(2\abs{(\vec{c} \cross \vec{a})})^{2}}$

gaunt blade Jan 30, 2025, 2:49 PM

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Option c

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?

gaunt blade Jan 30, 2025, 2:49 PM

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silver sparrow Now just do $\sqrt{\abs{\vec{c}}^{2}+(2\abs{(\vec{c} \cross \vec{a})})^{2}}$

Yup, this

silver sparrow Jan 30, 2025, 2:49 PM

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Wait what's the latex for cross product?

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Ah thanks

naive warrenBOT Jan 30, 2025, 2:49 PM

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SirLancelotDuLac

gaunt blade Jan 30, 2025, 2:50 PM

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naive warren **SirLancelotDuLac**

And set this equal to |b|

Which is just one

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So you can just square on both sides

cobalt stump Jan 30, 2025, 2:52 PM

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yep, got it

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hopefully i get better at spotting these things

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+solved @silver sparrow

#Vectors, given dot and cross product equations