The initial charges on the three identical metal spheres in Figure are the following: sphere A.Q: sphere B – Q/4; and sphere C, Q/2, where Q = 2.00 x 10-14 C. Spheres A and B are fired in place, with a center-to-center separation of. d = 1.20m, which is much larger than the spheres. Sphere C is touched first to sphere A and then to sphere B and is then removed. What then is the magnitude of the electrostatic force between spheres A and B?