Three conducting spheres (A, B, and C) are connected to insulating rods and are thus able to be moved freely. The first two spheres, each of radius r = 0.20 m, have initial charges of Q = -160 and QB = +40 C respectively. Sphere C has a radius of r = 0.40 m and is initially uncharged. a. Spheres A and B are briefly touched together and separated. What is the final charge on sphere A? Show how you got your answer. Ans: QA = -60 C b. After spheres A and B are separated, spheres A and C are briefly touched together and separated. What is the final charge on sphere C? Show how you got your answer. Ans: Qc = -40 C c. After spheres A and C are separated, spheres B and C are briefly touched together and separated. What is the final charge on sphere B? Show how you got your answer. Ans: QB = -33.3 C