Question

3. A point charge q, is held stationary at the origin. A second charge 02 is placed at a point a, and
the electric potential energy of the pair of charges is-6.4x10 J. When the second charge is
moved to point b, the electric force on the charge does 4.2x10 Jof work. What is the electric
potential energy of the pair of charges when the second charge is at point b?​

Answer 1

Explanation:

Please also give power of 10.

without that we can't solve it