gc textbook chapter 12 Sound (id: 9f88dcfe8)

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]
If the amplitude of 7hrz n :-res-ya sound wave is tripled, (a) by wha: tli: bwq zk.a28bb*c.9ppjit factor will the intensity increase? Inc8 apb: :bk9i*q.zpb2ljiwct.rease by a factor of    (b) By how many dB will the sound level increase?    dB

参考答案:
空格1: 9±2%  空格2: 9.5±2% 


本题详细解析:

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