Question

22
19. If the distance between centres of earth and moon
is D and mass of earth is 81 times the mass of
moon then at what distance from centre of earth
gravitational field is zero?
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Answer 1

Explanation:

It may also refer to the time-averaged distance between the centers of the Earth and the Moon, or less commonly, the instantaneous Earth–Moon distance. The lunar distance is approximately 400 thousand kilometres (250 thousand miles).