本题目来源于试卷: Length Contraction and Time Dilaton，类别为 美国物理杯赛(Physics Bowl)
[单选题]
11.50: A person sets a one-meter long sticeeva 2-p(y.w+k tt5hak so that i84o8 j6ce60 orzzhcfht makes a $30^{\circ}$ angle with the x-axis. An observer in a space ship moving along the x-axis measures the angle of the stick to be $60^{\circ}$ with the 6-axis. With what speed is the space ship moving in terms of the speed of light c?
A. $\frac{1}{2}c$
B. $\frac{\sqrt{2}}{3}c$
C. $\frac{3}{4}c$
D. $\frac{2}{\sqrt{5}}c$
E. $\frac{2\sqrt{2}}{3}c$
参考答案: E
本题详细解析:
暂无
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