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a) Obtain the magnitude of the gravitational force between the Moon and an m = 6.60 kilogram mass on the surface of the Earth nearest to the moon. The distance to the center of the Moon from the surface of the Earth is 3.76 × 105 kilometer and the mass of the Moon is 7.36 × 1022 kilogram.

b) Find the ratio of the magnitude of the gravitational force between an m = 6.60 kilogram mass on the surface of the Earth due to the Sun to that due to the Moon. The mass of the Sun is 1.99 × 1030 kilogram and the distance from the center of the Sun to the surface of the Earth is 1.50 × 108 kilometer.

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