Object A has mass 90.0 g and hangs from an insulated thread. When object B, which has a ch...

Object A has mass 90.0 g and hangs from an insulated thread. When object B, which has a charge of +130 nC, is held nearby, A is attracted to it. In equilibrium, A hangs at an angle θ= 7.20° with respect to the vertical and is 5.00 cm to the left of B. (a) What is the charge on A?(b) What is the tension in the thread?