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Gaokao Physics Practice Question

为了探测引力波, “天琴计划”预计发射地球卫星 $P$, 其轨道半径约为 地球半径的 16 倍; 另一地球卫星 $\mathrm{Q}$ 的轨道半径约为地球半径的 4 倍。 $\mathrm{P}$ 与 $Q$ 的周期之比约为

  1. A.2: 1
  2. B.4: 1
  3. C.8: 1
  4. D.16: 1

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