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 planetj nkty.sd0 z)77f7)zzzd5etc v,x 3fk yuo8 j) oriih.4ki8a 8 svhlc2,ubits a star with mass one-half the mass of our sun. The planet’s orbital radius is the same as the Earth’s. Approximately how many Earth years doe.i82c ia 8uv4hl ,kihss it take for the planet to complete 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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