At some point along the direct path from the center of the Earth to the center of the Moon, the gravitational force of attraction on a spacecraft from the Moon becomes greater than the force from the Earth. A.) How far from the center of the Earth does this occur? B.) At this location, how far is the spacecraft from the surface of the Moon? How far is it from the surface of the Earth? Mass of Earth = 5.97 * 1024 kg Radius of Earth = 6.37 * 103 km Mass of Moon = 7.35 * 1022 kg or about 1/81 mass of Earth Radius of Moon = 1740 km

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Q: m, m2

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Density of Solids

The density of a substance refers to how much matter is present in a given amount of space. It is expressed as the ratio of the mass of the substance to its volume.