PROBLEMS 0 - 50 Y M -8 g L - 30 cm L E- 12 x 10 N/C X M. Q E Figure 1: 1. A point charge of charge Q and mass 8g is suspended by an insulating string of length 30 cm is in equilibrium in a horizontal electric field E - 1.2 x 105i N/C as shown in Figure 1. If the string makes an angle of 50 with the vertical, (a) draw a free body diagram for the charge, and (b) determine the magnitude of the charge. (c) Is the point charge Q positive or negative