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]
14.27: Two spherical, non-rotating planetshuolie ,0z-e rt0 zd4em(092u z qoz8o, X andY, have the same uniqpj* h5zbl -l0form density. Planet X has twice the radius of Planetlhp0l qz-b* 5j Y. Let $g_x$ and $g_y$ represent the accelerations due to gravity at the surfaces of Planet X and Planet Y, respectively. What is the ratio of $g_x:g_y$?
A. 2:1
B. 1:2
C. 1:1
D. 4:1
E. 1:4
参考答案: A
本题详细解析:
暂无
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