vedm==×⋅××=×−−44899 104 160 100 01032 102919312π0ε....Nm CCm 9.11 10kgms.222chbgchbgch53. 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 202/4fUedπε=, where dis half the distance between the fixed electrons. The initial
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