Fa04-MT2-Ramesh-Soln

# Fa04-MT2-Ramesh-Soln - V = kQ/r E f = qV = kQq/r Using...

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1. (a) The initial total energy is just the kinetic energy. There is no electric potential energy because the particle m is infinitely far away. E i = K The final total energy is just the electric potential energy. There is no kinetic energy because the particle is at rest. Using U=qV,

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Unformatted text preview: V = kQ/r E f = qV = kQq/r Using energy conservation, K = kQq/r r = kQq/K (b) Now since the final distance is 2r, the final state has some kinetic energy. K = kQq/(2r) + ½ mv f 2 Using the result of (a), K = K/2 + ½ mv f 2 v f = (K/m) 1/2...
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