ch21-p045 - 45. Coulombs law gives 9 2 2 19 2 | q |2 k (e...

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45. Coulomb’s law gives ( ) 92 2 1 9 2 22 1 5 2 0 8.99 10 N m C (1.60 10 C) || (3 ) 3.8N. 49 ( 2 .
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