P25_048 - 2 48. The initial speed vi of the electron...

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Unformatted text preview: 2 48. The initial speed vi of the electron satisfies Ki = 1 me vi = e∆V , which gives 2 vi = 2 e∆V = me 2(1.60 × 10−19 J)(625 V) = 1.48 × 107 m/s . 9.11 × 10−31 kg ...
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