.Gravity.. (id: cd2532094)

本题目来源于试卷: .Gravity..，类别为 美国物理杯赛(Physics Bowl)

[单选题]
94.34: A hypothetical planet orbits33vj +iseeh5gme d)73je(s js a star with mass one-hal k4(b8llea 0qhf the mass of our su h8qel(0akbl 4n. The planet’s orbital radius is the same as the Earth’s. Approximately how many Earth years does 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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