問題詳情
44. A planet has the same mass as the Earth. It also has a radius twice the Earth’s radius. If the Earth’s acceleration due to gravity is g, what is the acceleration due to gravity on the planet’s surface?
(A) 1/4 g
(B) 1/2 g
(C) g
(D) 2 g
參考答案
答案：A
難度：困難0.285714
統計：A(2),B(2),C(3),D(0),E(0)