Question

A particle with a charge of 5 x10-6C and a mass of 20 g moves uniformly with a speed of 7 m/s in a circular orbit around a stationary particle with a charge of -5 x10-6C. The radius of the orbit is:
A) 0 m
B) 0.23 m
C) 0.62 m
D) 1.6 m
E) 4.4 m

Answer

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