Object A has mass 83.0 g and hangs from an insulated thread. When object B, which has a charge of +140 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 5.40 cm to the left of B.
a. What is the charge on A?
b. What is the tension in the thread?
Answers: 2
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