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Answer:
Explanation:
Doubling the distance reduces the gravity force by four.
F = 0.90(9.8/4) = 2.205 = 2.2 N
could also use F = GmM/r²
F = 6.674e-11(0.90)(5.972e24) / (6.4e6 + 6.4e6 )² = 2.1894... = 2.2 N