Respostas

2013-09-14T00:51:17-03:00
F = K. Q1.Q2 / d²
F = 9 x 10^9 . 10x10^-6 * -2x10^-6 / 0,2²
F =  -180 x 10^-3  /  0,04
F = -4500 x 10^3
F = -4,5 x 10 ^6 N
4 5 4