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]
16.49: John is at rest ons1o0l+0m ghk+ k k lda(hrf3-s a py9eoh p d8 2+z0sb0kohlatform that he measures to be 500 m long on the x-axis. He then sees a spaceship moving along the x-axis with dpb0ykho08 + 9h2 esoza speed of $1.80\times\: 10^8\:m/s$ as it crosses the length of the platform. Sitting in her chair, the spaceship's pilot measures the time it takes her to cross the platform. What type of time interval does she measure and what value does she obtain?
A. Type of time interval is Proper time Time is $2.22\mus$
B. Type of time interval is Improper time Time is $2.22\mus$
C. Type of time interval is Proper time Time is $2.78\mus$
D. Type of time interval is Improper time Time is $2.78\mus$
E. Type of time interval is Neither proper nor improper Time is $3.48\mus$
参考答案: A
本题详细解析:
暂无
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