問題詳情

14. Given that the Earth's radius is 6400 km, the escape velocity at the Earth's surface is
(A) 1.1 x 103ms-1,
(B) 1.1 x 10*ms-1,
(C) 2.2 x 104ms-1,
(D) 1.1 X 105 m s-1,
(E) 5.0 X 105 m s-1.

參考答案

答案：99

統計：A:0,B:0,C:0,D:0,E:0

難度：計算中