本题目来源于试卷: Physics Unit26: Special Theory of Relativity，类别为 国际高中通用物理
[单选题]
One 20-year-old twinyyn6q n6q ow; fvm9 l+48*nulg;dlgwkxg3)a.i xr6wi xw/m q l0.k3w6 brother takes a space trip with a speed of 0.80c for 30 years according to a clock on the spaceship. Upon returning to the Earth, what is his own age and the age of the Earth-based twin brothel 3gd0lxmri 6q. 6 ;./)wwgwwa x3kxikr?
A. 20; 30
B. 30; 50
C. 50; 70
D. 70; 90
参考答案: C
本题详细解析:
暂无
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