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) rmhlj79x- tu,ghqk;40tf 0 sxand P-waves (longitudinal) produced by earthquakes travel at different speeds through the earth. S-waves travel about 4000 m/s, P-waves travel at nearly 7000 m/s, how far away must an earthquake be for the P-waves to arrive 2 minutes befo x4fq00hs;tk gre 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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