• November 5th, 2018

Mastering Physics Problem

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A small metal sphere, carrying a net charge of q1 = -2.90 μC , is held in a stationary position by insulating supports. A second small metal sphere, with a net charge of q2 = -7.20 μC and mass 1.60 g , is projected toward q1. When the two spheres are 0.800 m apart, q2 is moving toward q1 with speed 22.0 m/s. Assume that the two spheres can be treated as point charges. You can ignore the force of gravity.
a) What is the speed of q2 when the spheres are 0.430 m apart? b) How close does q2 get to q1?

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