1. The problem statement, all variables and given/known data Two initially uncharged identical metal spheres, 1 and 2, are connected by an insulating spring (unstreched length L0 = 1.55 m, spring constant k=30.0 N/m). Charges +q and -q are then placed on the spheres and the spring contracts to length L = 1.25 m. a. Determine the charge q. b. If the spring is coated with metal to make it conducting, what is the new length of the spring? 2. Relevant equations Fs = -kΔx Fe = 1 / 4∏ε0 * (+q)(-q) / r^2 m1 = m2 3. The attempt at a solution I attached my work. for a. what I basically did was set Fe = Fs and solved for q. I got 3.16*10^-5 C, but the answer should be 3.96*10^-5 C. Could it be because of truncated significant figures? for b. How can I show that coating the spring in metal cause the metal ball to return to L0?