P25_036 - 36. (a) We use Eq. 25-43 with q1 = q2 = e and r =...

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36. (a) We use Eq. 25-43 with q 1 = q 2 = e and r =2 . 00 nm: U = k q 1 q 2 r = k e 2 r = ³ 8 . 99 × 10 9 N · m 2 C 2 ´ (1 . 60 × 10 19 C) 2 2 . 00 × 10 9 m =1 . 15 × 10 19 J . (b) Since
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