Question

Please Help! I need help with Gaussian surface calculations. I know this is physics, but I never get help there. I'll post the question below for the brave soul that will help me.

Answer 1

An insulating spherical shell of inner radius R1 and outer radius R2 has a charge density
\[\rho =\rho_{0}r^{2}/R^{2}_{1}\]
a: Determine the electric field everywhere in space and graph |E~ | versus r.
b: You have a conductor of radius R2. What surface charge density is needed for it to
produce the same electric field for r > R2 as the insulating sphere does?

Answer 2

@dan815 @Kainui

Answer 3

Its A

Answer 4

;( funny

Answer 5

@zepdrix any good at this stuff i really dont understand it

Answer 6

@xapproachesinfinity will you help me I know basically nothing about this subject

Answer 7

I honestly don't how to do it!
I'm retaking this subject this semester lol. I took long ago and I did pass it, i knew it was challenging

Answer 8

I'm taking it for the first time and I know nothing! its pretty bad

Answer 9

we just started this with electrostatic and coulomb law the basics of it :)
i know there are people here that know this stuff as second nature

Answer 10

I usually seek problem who look somewhat similar to get the idea, and then try to tackle the problem

Answer 11

I've looked around and they tend to be for a solid sphere

Answer 12

do you know anyone on here who can help?

Answer 13

spherical shell you just had two radii

Answer 14

it might be the same for the solid one changing the radius to inner and outer radii

Answer 15

they are but not online now

Answer 16

Ive tried =( i was provided with the answer just don't know how to get there

Answer 17

lol that the worst part heheh

Answer 18

I've gotten close but no dice

Answer 19

one thing i have always found to work for me is, when i try and fail to get there i go 90 degree change of my method and see if i get there. stopping at something that fail just makes you frustrated but trying different things could give you an insight or perhaps you realize where you stuck latter on :) just a little advice :)

Answer 20

@Kainui hey help here :)

Answer 21

thanks

Answer 22

@IrishBoy123 can you help me?

Answer 23

yes

Answer 24

@kkutie7 this might be some help in getting started... http://web.uvic.ca/~jalexndr/Ch24pdfvideosoptimized.pdf

Answer 25

IT FLOWS TANGENTIALLY AT EACH POINT OF THE SURFACE

Answer 26

Yes hwyl I know that. I just know how to get the electric field outside and between each radius.

Answer 27

@whpalmer4 Thank you for that. I have the same thing in my notebook, but I really need it explained to me because I just don't understand.

Answer 28

Oh my god. I haven't seen this in so long.

Answer 29

I this after this course I'll never see it again

Answer 30

I'm lost on this. Sorry, I can't help you here. :/

Answer 31

thanks anyway