Question

Two electrons exert a force of repulsion of
0.96 N on each other.
How far apart are they? The elemental
charge is 1.602 × 10
−19
C .

Answer 1

0.96 newtons = k e^2/r^2

k is the Coulomb constant,
8.99*10^9 N*m^2/C^2.
You already know what e is.

Solve for r

Answer 2

3.333

Answer 3

2.15E8