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A small metal ball, carrying a net charge of q_1 = -2.40 \mu C, is held in a stationary position by insulating supports. A second small metal ball,...

A small metal ball, carrying a net charge of q_1 = -2.40 mu C, is held in a stationary position by insulating supports. A second small metal ball, with a net charge of q_2 = -7.30 mu C and mass 1.60 g, is projected toward q_{1}. When the two spheres are 0.800 rm m apart, q_{2} is moving toward q_{1} with speed 22.0 rm m/s . Assume that the two spheres can be treated as point charges. You can ignore the force of gravity.What is the speed of q_{2} when the balls are 0.450 m apart?

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