- #1

- 1

- 0

## Homework Statement

[/B]

## Homework Equations

V= kq/r.[/B]

## The Attempt at a Solution

For 8-8, I do not really know how to approach it.

For 8-14 , I think that q2=-q1 and q3=q1+q2.

I can now use V=kq/r and then find the equations for r>R3 , r=R3 , R2<r<R3 , r=R2 and R1<r<R2 and then graph. Am I right?