Question: (a) What equal positive charges would have to be placed on Earth and on the Moon to neutralize their gravitational attraction? (b) Why don't you

(a) What equal positive charges would have to be placed on Earth and on the Moon to neutralize their gravitational attraction?
(b) Why don't you need to know the lunar distance to solve this problem?
(c) How many kilograms of hydrogen ions (that is, protons) would be needed to provide the positive charge calculated in (a)?

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