試題詳解

36. Two Earth satellites, A and B, of same mass m, are to be launched into circular orbits about Earth’s center. Satellite A is to orbit at an altitude of Earth’ radius, h_A = R_E. Satellite B is to orbit at an altitude of 2h_A. The ratio of the total energy of satellite B to that of satellite A is,
(A) 1/2
(B) 2/3
(C) 2
(D) 3/2
(E) 1/4