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]
A set of twins, Andrea and Courtney, are initially 10 yeazdv32*l rgigd; 6 7pilyuou (3rs old. While Courtnoc1p 9m2w*,,angmb kiey remains on Earth, Andrea rides on a space ship which travels away from Earth at a speed of 0.6c for five years (as measured by Courtney), then turns around and comes back at 0.6c. When Andrea returns, Courtney is 20 years old. How old is Andrea upo1,pwo*nam c9i2b, mgkn her return?
A. $10 \; years$
B. $12 \; years$
C. $18 \; years$
D. $20 \; years$
参考答案: C
本题详细解析:
暂无
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