本题目来源于试卷: Wave Basic Concepts，类别为 美国物理杯赛(Physics Bowl)
[单选题]
01.38: The S-waves (transverse) andlnv+ 5bt v0bw1/nvj.y e;ag s7 P-waves (longitudinal) produced * n;jmf 3a8lotmnu xw,yew119ew:vq8by earthquakes travel at different speeds through the earth. S-waves travel about 4000 m/s, P- f9lqay*jw8n mwm81nox;teeu , 1w:3v waves travel at nearly 7000 m/s, how far away must an earthquake be for the P-waves to arrive 2 minutes before the S-waves?
A. 360 km
B. 480 km
C. 840 km
D. 1120 km
E. 1320 km
参考答案: D
本题详细解析:
暂无
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