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## Homework Statement

Charges + and -q are placed at -1cm and 1cm along the y axis. If their electric potential energy is -45microJ, what is q?

## Homework Equations

U=qV

V=Es

## The Attempt at a Solution

I got an equation for the electric potential between the two charges, but it was relative to some point charge that was placed between them, so I didnt know how to use that equation to what I had to solve for