A small spherical insulator of mass 12.710-2 kg and charge +45.2 x 10-8 C is hung by a thread of negligible mass. A charge of -98.4 x 10-8 C is held 16.8 cm away from the sphere and directly to the right of it, so the thread makes an angle e with the vertical. Find the tension in the thread. (k = 9.00 x 10 N.m/C) e 1 d 92