Question

What equal charges should to be placed on
earth and moon to neutralize their gravitational
attraction? (mass of earth = 10^25 kg, mass of moon
= 10^23 kg)
(1) 8.6 x 10^13 (2) 6.8 x 10^26 C
(3) 8.6 x 10^3C (4) 9 x 10^6 C
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Answer 1

It's so hard

I think I cant help you !!!