gc textbook chapter 11 Vibrations and Waves (id: 806dd8b68)

本题目来源于试卷: gc textbook chapter 11 Vibrations and Waves，类别为 通用国际物理

[填空题]
A sound wave is travelinq v xs7 72*fv;63a63e ivlfha /jmnlxkzrp2kr7 u:m*rg in warm air when it hits a layer of cold, dense air. If the7zkpm2 rr:r*u sound wave hits the cold air interface at an angle of 25$^{\circ} $, what is the angle of refraction? Assume that the cold air temperature is $ - 10 ^{\circ} C$. and the warm air temperature is $ + 10 ^{\circ} C$. The speed of sound as a function of temperature can be approximated by v=(331+0.60T) m/s where T is in $ -10 ^{\circ} C$.    $^{\circ} $

参考答案: 24±2%


本题详细解析:

微信扫一扫，分享更方便