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## Homework Statement

The potential energy of a system of two charges (q1 = 5.0 µC and q2 = 3.3 µC) is 0.37 J. What is the distance between the charges?

## Homework Equations

U=(kq_0q)/r --> r=U/(kq_0q)

U=V/q_0

V=0.37J

q1 = 5.0 µC

q2 = 3.3 µC

## The Attempt at a Solution

So I was going to use equation 2 but I have two charges involved and that one only asks for q_0.

Do I calculate the change of the charge and use that for q_0?