At What Separation Will Two Charges, Each of Magnitude 6 $\mu$

Multiple Choice

At what separation will two charges, each of magnitude 6.0 $\mu$ C, exert a force of 0.70 N on each other?

A) 1.1 × 10^-5 m
B) 0.23 m
C) 0.48 m
D) 0.68 m
E) 1.4 m