Question

Electric Potential Problem. Can someone help quick? Thanks a bunch. I attached a picture of the problem.

Answer 1

try to use the fact that work is variation of kinect energy

Answer 2

\(q_1\) and \(q_2\) should cancel each other out so just consider \(q_3 \) and \(q_4\).
The potential energy is defined as \(\huge k_e{q_3q_4\over r}\).
Equate that to kinetic energy which is \(1/2mv^2\).

I haven't done E&M in a while so I'm doing this off the top of my head.

Answer 3

@roadjester it's rigth since in infinity there is no potential energy

Answer 4

@mawaboii ok so according to @RaphaelFilgueiras , that is correct so if the answer ends up wrong, blame him.
=)

jk jk

Answer 5

lol