Consider three identical metal spheres, a, b, and c. sphere a carries a charge of +5q. sphere b carries a charge of -q. sphere c carries no net charge. spheres a and b are touched together and then separated. sphere c is then touched to sphere a and separated from it. lastly, sphere c is touched to sphere b and separated from it. (a) what is the ratio of the final charge on sphere c to q? what is the ratio of the final total charge on the three spheres to q (b) before they are allowed to touch each other and (c) after they have touched?