Two small plastic balls hang from threads of negligible mass. Each ball has a mass of 0.14 g and a charge of magnitude q.

Two small plastic balls hang from threads of negligible mass. Each ball has a mass of 0.14 g and a charge ofmagnitude q. The balls are attracted to each other, and the threads attached to the balls make an angle of 20.0°with the vertical, as shown in Figure 19–39. Find (a) the magnitude of the electric force acting on each ball, (b)the tension in each of the threads, and (c) the magnitude of the charge on the balls.

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