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Gaokao Physics Practice Question

火星的质量和半径分别约为地球的 $\frac{1}{10}$ 和 $\frac{1}{2}$, 地球表面的重力加速度为 $\mathrm{g}$, 则火星 表面的重力加速度约为

  1. A.$0.2 g \cdot$
  2. B.$0.4 \mathrm{~g}$
  3. C.$2.5 g \cdot$
  4. D.$5 g$

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