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2014-03-12T17:47:46-03:00
F = |K x Q x Q| / d²
25 x 10^-3 = |9 x 10^9 x 5 x 10^-6 x 5 x 10^-6| / d²
25 x 10^-3 = |225 x 10^-3| / d²
d² = |225 x 10^-3| / 25 x 10^-3
d² = 9 x 1
d = \sqrt{9}
d = 3m
1 5 1