Preface: Newbie here. Sorry if this has been asked before - I did have search but couldn't quite find what I was after. Also, I'm not putting this into the electrical engineering section because I don't want what will inevitably be an electrical engineer's answer =)
Here goes:
Voltage across...
Right, so it's not so much a case of having to conceptualise the equation F = kqQ/r^2 for a system that only involves one particle, so much as initially understanding F = kQ/r^2 for one particle, and then understanding that F = kqQ/r^2 can be used to relate the force felt by q due to the field...
Homework Statement
Calculate the Electric Field vector at the surface of a proton.Homework Equations
F = qE --> E = F/q
F = [k(q1)(q2)] / (r^2)
The Attempt at a Solution
Well basically I'm not sure... I know it's a really simple question (it's not really even a homework exercise, just...