Respostas

2013-08-20T17:33:11-03:00
E = F / |q|

F = k * |Q| * |q| / d²

E = k * |Q| * |q| / d² / |q|

E = k * Q / d²

E = 9*10^9 * 8*10^-9 / (4*10^-2)^2

E = 72 / 16 * 10^-4

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E = 4,5 * 10^4 N/C
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