1. The Kepler's second law of planetary motion is that the line joining the sun to a planet sweeps out equal areas in equal times. Which one of the following principles is the fundamental of the Kepler's second law?
(A) conservation of energy
(B) conservation of charge
(C) conservation of momentum
(D) conservation of angular momentum
(E) superposition principle
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統計: 尚無統計資料
統計: 尚無統計資料