gc textbook chapter 12 Sound (id: ed7f9c05b)

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]
Human beings can typically detect a difference inam5i0 kcq ,sd/ sound level of 2.0 dB. W5dxh1iert c*9+q 4 orz3kjh0ehat is the ratio of the amplitudes of two sounds who zckqer4*d j e0t+ 1x5ih93rhose levels differ by this amount? [Hint: See Section 11–9.]$\approx$   

参考答案: 1.3±2%


本题详细解析:

微信扫一扫，分享更方便