“2015IOAA理论短问题第2题-行星质量”的版本间的差异
来自astro-init
（创建页面，内容为“==英文题目== One satellite of a planet has an orbital period of 7 days, 3 hours, 43 minutes, and the semi major axis is 15.3 times the mean radius of the planet.…”） |
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2022年3月18日 (五) 20:18的最新版本
英文题目
One satellite of a planet has an orbital period of 7 days, 3 hours, 43 minutes, and the semi major axis is 15.3 times the mean radius of the planet. The Moon has an orbital period of 27 days, 7 hours, 43 minutes and the semi major axis is 60.3 times the Earth's mean radius. Assume that the mass of the moon and the satellite is negligible compared to the mass of the planet. Calculate the ratio of the planet’s mean density to that of the Earth.
