本题目来源于试卷: Physics Unit26: Special Theory of Relativity，类别为 通用国际物理
[单选题]
One 20-year-old twin brother takes a space trip with a 0ug q+b ve9jt:speed of m-c)2q9k *-p4;(xfdxwqijz u6gfp d w0.80c for 30 years according to a clock on the spaceship. Upon returning to the Earth, what is his own age and the*wf2ug)kdf6-m 49; diq x-cwjxp z(qp age of the Earth-based twin brother?
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
| 
