1. The problem statement, all variables and given/known data In the figure, r1 = 5 and r2 = 7 cm. Before the conducting spheres are connected by the wire a charge of 5×10-7 C is placed on the smaller sphere while the larger sphere is uncharged. Calculate the charge on the smaller sphere after the wire is connected. Assume that the separation of the spheres is very large compared to their radii. 2. Relevant equations V = kQ/r 3. The attempt at a solution I know that at the beginning, only the smaller sphere has a charge. Therefore, the total charge of the system after being connected must equal the same charge. Also, I know that both spheres will have the same potential. V1 = V2 kQ1/r1 = kQ2/r2 After this point, I'm just clueless on how to figure out those individual charges knowing only the total charge and radii. Any help is great!