25. Electric Potential
Electric Potential Energy
11:26 minutes
Problem 23a
Textbook Question
Textbook QuestionA small metal sphere, carrying a net charge of q_1 = -2.80 μC, is held in a stationary position by insulating supports. A second small metal sphere, with a net charge of q_2 = -7.80 μC and mass 1.50 g, is projected toward q_1. When the two spheres are 0.800 m apart, q_2, is moving toward q_1 with speed 22.0 m/s (Fig. E23.5). Assume that the two spheres can be treated as point charges. You can ignore the force of gravity. (a) What is the speed of q_2 when the spheres are 0.400 m apart?
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