試題詳解

1. Newton's law of gravitational force is represented by F= GMm/r². What is the dimension of tiie gravitational constant G?
(A) kg●m³●s^-2
(B) kg^-1●m●s^-2
(C) kg●m²●s^-2
(D) kg●m●s^-2 
(E) kg^-1●m3●s^-2