1.1 x 10-5N
3.3 x 10-5N
3.0 x 10-4N
9.0 x 10-4N
Correct answer is D
F α1r2 therefore, F1F2 = r1(r2)2 10−4F2 = (0.06)2(0.18)2 F = 9 x 10-4N
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