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All i need is help on how to start it.

by symmetry the situation will be this way:|dw:1329356841736:dw|

|dw:1329356974346:dw|the angles should be 60/2=30degrees

ok, im not sure if i know that equation yet. so how do you use it?

don't know Gauss' law?
I wonder how else it can be solved...

lambda is the charge per unit length by the way...

ok i understand this so far.
Thanks

welcome, let me know if you get stuck

Real Quick, how do i find the radius in this situation?

got it

I hate to say it but i did everything and i still got it wrong. In the end i got 136.1.

let me give it a try...

sorry, I get\[1.76\times10^{-8}\frac Vm\]

nope still wrong. :/

I have no clue.

ok I'm really hoping it's about\[3.51\times10^{-7}\]

wait no!

I forgot e0 all the way through!

sadly nope. i only have one try left.
I'm not sure whats happening

Oh I didn't realize you had limited tries, sorry :(

ok sounds good. And thank you soooooo much for doing that

Well, the correct answer was 3.8*10^4. i didnt get it right but i just thought i would let you know

Thanks for your help anyways

the above comes to 3.97*10^4 ...

sucks I forgot epsilon0 for so long though, otherwise might have figured it out :/

I'll ask me teacher when i go to school