本题目来源于试卷: Physics Unit33: Astrophysics and Cosmology，类别为 国际高中通用物理
[单选题]
The Schwarzschild radius of a bla:pjky-i 6o(rcck hole is that radial distance64yq p6vwce 4,or7 h1hq5xvwo from the center of a sphere within which not even light ca6qh5h ow1,cyx4 6wp4 r7vqoven escape. It was first discovered mathematically by Schwarzschild in 1916 after Einstein published his general relativity theory. It can be calculated from a star's mass M as: $R = 2GM/c^2$. Take the radius of both stars A and B as the Schwarzschild radius. If the mass of star A is twice as much as the mass of star B, the average density of star A, compared to star B will be
A. the same.
B. twice as much.
C. half as much.
D. four times as much.
E. one-fourth as much.
参考答案: E
本题详细解析:
暂无
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