Respostas

2014-04-15T00:11:34-03:00
F = K Q q /d²
F = 9.109 . 2.10-6. 4.10-6 (módulo)/(5.10-2)²
F = 72.10-3/25.10-4
F = 2,88.10¹
F = 28,8 N

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