ch24_p45 - 45. We use conservation of energy, taking the...

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45. We use conservation of energy, taking the potential energy to be zero when the moving electron is far away from the fixed electrons. The final potential energy is then 2 0 2 /4 f Ue d πε = , where d is half the distance between the fixed electrons. The initial kinetic energy is Km v i = 1 2 2 , where m is the mass of an electron and
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