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, non-rotating ,jc 3a-z ej2c9;qsqil planets, X andY, have the same unifoadso*fc )y39ve7r* o st4q r;urm density. Planet X has twice the radius of Planet Y )7oaru fyd 3*vso rtq*cs4;9e. 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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