Physics, 07.10.2020 18:01, marrizza7

At a distance N X RE from the earth's surface, where N is an integer, the gravitational force on an object is only 1/81 of its value at the earth's surface. What is N?
Express your answer as an integer.

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At a distance N X RE from the earth's surface, where N is an integer, the gravitational force on an...