# Working with Newton's law of gravitation

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Mars has a mass of about 6.4 x 10^23 kg, and its moon Phobos has a mass of about 9.6 x 10^15 kg. If the magnitude of the gravitational force between the two bodies is 4.6 x 10^15 N, how far apart are Mars and Phobos?

Please show the work, answer and the formulas you used. Thanks!

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According to Newton's law of gravitation, the gravitational force of attraction between two bodies of mass m1 and m2 is given by,

F = (G m1 ...

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