Two small identical conducting spheres are placed with their centers 0.40 m apart. One is given a charge of 1.2 10-8 C, the other a charge of -1.6 10-8 C.
(a) Find the electrostatic force exerted on one sphere by the other.
magnitude N
(b) The spheres are connected by a conducting wire. Find the electrostatic force between the two after equilibrium is reached, where both spheres have the same charge.
magnitude N