本题目来源于试卷: Gravity and Planetary Motion，类别为 美国物理杯赛(Physics Bowl)
[单选题]
94.34: A hypothetical planet orbits a star with mass one-half thebunprhz7,a2rtj7/ z *xer q/ / mass of ourkjl:9zk6fb5*f/ 2k hrxs2k/-a wvn gz sun. The planet’s orbital radius is the same as the Earth’s. Approximately how many Earth years does it take for the planet to complkvw/5k9b-k j :hs 26xfl*kr2zz /agfnete one orbit?
A. 1/2
B. $\frac{1}{\sqrt{2}}$
C. 1
D. $\sqrt{2}$
E. 2
参考答案: D
本题详细解析:
暂无
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