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Determine the speed with which the shadow of the moon moves across the earth's surface during a total solar eclipse, if it is observed at the equator. For simplicity, assume that the Sun, Earth and Moon are in the same plane, and the earth's axis of this plane is perpendicular. The speed of light is considered infinitely high compared to all other speeds. The radius of the lunar orbit Rl = 3.8•105 km.
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Short solution. Format gif