Recent content by terence108

collinsmark, Could you please explain why you used the energy stored within a capacitor instead of using U=-kq^2(1/a - 1/b) ?

Homework Statement Two small metal spheres, each of mass m, are attached to the lower ends of two long insulated strings of negligible mass as shown. Each string is length, l. The spheres are pulled apart until each string makes an angle "theta" with the horizontal. A charge of +q is placed...