1.tNewton's law of gravitational force is represented by F= GMm/r2. What is the dimension of tiie gravitational constant G?
(A)tkg●m3●s-2t
(B) kg-1●m●s-2t
(C) kg●m2●s-2t
(D) kg●m●s-2
(E) kg-1●m3●s-2
答案：E
統計：A:0,B:0,C:0,D:0,E:1
難度：計算中
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