gc textbook chapter 11 Vibrations and Waves (id: 270a9a7d4)

本题目来源于试卷: gc textbook chapter 11 Vibrations and Waves，类别为 IB物理学

[填空题]
An earthquake P wave traveling qs3r3 rrx*9rjf r m /nr+5g5guat k.0 km/s strikes a bound;c.xrs9,vw 0ekemm7c ary within the Earth between two kinds of material. If it approaches the boundary at an incident angle of 9xcsve; r.ewm7,kmc0 47 $^{\circ} $ and the angle of refraction is 35 $^{\circ} $, what is the speed in the second medium?    km/s

参考答案: 6.3±2%


本题详细解析:

微信扫一扫，分享更方便