Fields D.1 Gravitational Fields & Potential (id: a6ca0feab)

本题目来源于试卷: Fields D.1 Gravitational Fields & Potential ，类别为 IB物理学

[单选题]
Planet $X$ has radius $R$ and density $ρ$. The gravitational field strength at the surface of Planet $X$ is $g$.
What is the ratio of the gravitational field strength at the surface of planet $Y$, which has radius $0.25R$ and density $3ρ$, to that at the surface of Planet $X$?

A. $\frac{3}{4}$
B. 4
C. 16
D. 48


参考答案:  A


本题详细解析:

微信扫一扫，分享更方便