gc textbook chapter 12 Sound (id: c01598866)

本题目来源于试卷: gc textbook chapter 12 Sound，类别为 通用国际物理

[填空题]
At a race track, you can est9v (xxl,aq t5m jmwh/7imate the spe0x ,; lng(.s0r1kg3 gecagdbpwa.5yo6xbij6ed of cars just by listening to the difference in pitch of the engine noise between approaching and receding cars. Suppose the sound of a certain car drops by a full octave ( g5gik, r y00(;g .1sewbxon.cplj663 a gbxadfrequency halved) as it goes by on the straightaway. How fast is it going?    m/s

参考答案: 114±2%


本题详细解析:

微信扫一扫，分享更方便