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23) Write the three Kepler's laws for planetary motion

Answer»

Kepler's three laws of planetary motioncan be stated as follows: (1) Allplanetsmove about the Sun in elliptical orbits, having the Sun as one of the foci. (2) A radius vector joining any planet to the Sun sweeps out equal areas in equal lengths of time.(3)Kepler's Third Law. “The square of the orbital period of a planet is proportional to the cube of the semi-major axis of its orbit” That'sKepler's third law. In other words, if you square the 'year' of each planet, and divide it by the cube of its distance to the Sun, you get the same number, for all planets.

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