本题目来源于试卷: .Gravity..，类别为 美国物理杯赛(Physics Bowl)
[单选题]
14.27: Two spherical ghgtwf) df/ 8zn+ly.*sm ok5 slsm xrhvgb6,dh: h 03n,*v bue*8*b7s, non-rotating planets, X andY, have the same uniform density. Planet X has twice th6vk 8lx **br ss5o neus0 h,:,mhd3gvb*s7bhme 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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