The initial charges on the three identical metal spheres in the figure below are the following: sphere A,Q; sphere B,-Q/16; and sphere C, Q/8, where Q = 3.30 x 10-14 C. Spheres A and B are fixed in place, with a center-to-center separation of d = 4.1 m, 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? B C