(a) A sphere is attached to a string of length L = 22.4 cm and suspended from the ceiling, as shown in the figure. A uniform electric field points to the right in the figure. When 8 = 16.8, the sphere is in equilibrium. Find the net charge on the sphere (in C). y 0- E 1.00 10 N/C L m = 2.00 g Draw a free-body diagram, and determine the forces acting on the sphere. Apply Newton's second law in the x- and y-directions, and solve your resulting equations for q. C (b) What If? If the electric field is suddenly turned off, what is the speed of the sphere at the bottom of its swing (in m/s)? Use energy conservation and solve your resulting equation for the speed v. m/s