P25_022 - 22. We use Eq. 25-20: 8.99 109 1p = V= 40 r2 Nm2...

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22. We use Eq. 25-20: V = 1 4 πε 0 p r 2 = ³ 8 . 99 × 10 9 N · m 2 C 2 ´ (1 . 47 × 3 . 34 × 10 30 C · m) (52 . 0 ×
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