Q1. Two electrons are fixed 2.0 cm apart. Another electron is shot from infinity and comes to rest midway between the two. What was its initial speed ?
Q2. A particle of positive charge Q is fixed at point P. A second particle of mass m and negative charge -q moves at a constant speed in a circle of radius r1, centered at P.. What is the work done by an external agency to increase the radius to r2?
Wednesday, April 15, 2009
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