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## Homework Statement

Two point charges , Qz= +5.00 nanoC and Q2= -3.00 nanoC, are separated by 35.00 cm.

a) What is the potential energy of the pair? What is the significance of the algebraic sign?

b) what is electrical potential at a point midway between the charges?

(here i'm supposing i'd do it the same way as in question a but divide the distance in half?)

c)how much work is required to bring a charge Q3=+2.00nanoC from very far away to the point midway between the charges

## Homework Equations

Im guessing i have to use deltaV=delta PE/q= - Ed but im still not sure about how to proceed because i have coulombs and these equations work in volts.

Also, when it says separated by 35.0 cm, would this equal my height in the potential energy formula?