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 plaa7 dujrgmneb79a/xy(. ;y *xc(p 2znhnets, X 5 ni0lxp9pp+gz.vrhby; hugk5 u7x5(andY, have the same uniform density. Planet X hap g.u p ukxy gi;bzh55x9nl57 (0v+hrps twice the radius of Planet 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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