A small spherical insulator of mass 8.00*10-2 kgandcharge +0.600μC is hung by a thin wire of negligiblemass. Acharge of -0.900μC is held 0.150m awayfrom the sphere and directlyto the right of it, so the wire makesan angle θ with the vertical(see the drawing). Find a)theangle θ and b) the tension in thewire. answer: 15.4o , 0.813N
