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Gaokao Physics Practice Question

已知太阳到地球与地球到月球的距离的比值约为 390 , 月球绕地球旋 转的周期约为 27 天, 利用上述数据以及日常的天文知识, 可估算出太阳对 月球与地球对月球的万有引力的比值约为

  1. A.0.2
  2. B.2
  3. C.20
  4. D.200

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