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In the figure shown, electrons 1 and 2 are on the x-axis while charges

3 and 4 are on the y-axis. The charges 3 and 4 are identical with

charge -Ne and at identical angle θ(theta). N is an integer. Electron 2 is

free to move while the other charges are fixed in place a horizontal

distance R from electron 2. Determine the angle as a function of

N so that electron 2 experiences no net force.

Here is a link to the image included with the problem.

http://img.photobucket.com/albums/v720/l… [Broken]

I thought I would use the equation E=(k*q)/r² or use E=(k*Q*q)/r²

E=electric field

k=constant 8.99x10^9

q= the charge

Q= the other charge

r= radius

Even help with the first step will likely help so I can get on the right path. I'm not sure how to do this one at all. Just trying to study for a test on Friday and pulling out problems that I do not know how to do. Thank you in advance!

3 and 4 are on the y-axis. The charges 3 and 4 are identical with

charge -Ne and at identical angle θ(theta). N is an integer. Electron 2 is

free to move while the other charges are fixed in place a horizontal

distance R from electron 2. Determine the angle as a function of

N so that electron 2 experiences no net force.

Here is a link to the image included with the problem.

http://img.photobucket.com/albums/v720/l… [Broken]

I thought I would use the equation E=(k*q)/r² or use E=(k*Q*q)/r²

E=electric field

k=constant 8.99x10^9

q= the charge

Q= the other charge

r= radius

Even help with the first step will likely help so I can get on the right path. I'm not sure how to do this one at all. Just trying to study for a test on Friday and pulling out problems that I do not know how to do. Thank you in advance!

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