本题目来源于试卷: Fields D.1 Gravitational Fields & Potential ，类别为 IB物理学
[单选题]
The escape speed from the surface of a pl2r ss8bun1uc2i 9a2h san;)igu*0li g3et 2bn ohet of mass $M$ and radius $r$ is given by $v_{esc}$.
What is the orbital speed of a satellite of mass $m$, at a height of $2r$ from the surface of the same planet?
A. $\frac{v_{esc}}{3}$
B. $\frac{v_{esc}}{\sqrt{6}}$
C. $\frac{v_{esc}}{2}$
D. $\sqrt{6}v_{esc}$
参考答案: B
本题详细解析:
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