問題詳情

4.Ekapluto is an unknown planet that has two moons in circular orbits. The table summarizes the hypothetical data about the moons. (G = 6.67 x 10-11 Nㆍm2/kg2)

The mass of Ekapluto is closest to
(A)1.0 x 1023 kg,
(B) 3.0 x 1023 kg,
(C) 1.0 x 1024 kg,
(D) 1.0 x 1022 kg,
(E) 3.0 x 1022 kg.

參考答案

答案：B

統計：A:0,B:0,C:0,D:0,E:0

難度：計算中