本题目来源于试卷: .Gravity..，类别为 美国物理杯赛(Physics Bowl)
[单选题]
99.21: What happens to the force of gravitational attraction between two smahr)jr tnh6f,k* c,x h,qmph *3ll .it j /fdywboe.5 e;n*objects if the mass of each object is doubled and tydb;. e*n5twjief/o . he distance between their centers is doubled?
A. It is doubled
B. It is quadrupled
C. It is halved
D. It is reduced fourfold
E. It remains the same
参考答案: E
本题详细解析:
暂无
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