Two charged particles are placed 2.0 meters apart. the first charge is +2.0 e-6 c, and the second charge is +4.0 e-6 c. what is the electrical force between the two charges?
(k = 9.0 e9 nm^2/c^2)
a. +1.8 e-2 n and it is repulsive
b. +3.6 e-2 n and it is repulsive
c. +4.5 e-2 n and it is attractive
d. +9.0 e -2 n and it is attractive