gc textbook chapter 12 Sound (id: c1d6e4fc7)

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]
What would be the sound level (in dB9mk)c6h fcs z:v+ye1j/5ou px) of a sound wave in air tharpt+qdnbky4 7zwu ( *6t corresponds to a displacement ampknt4( yw *z7u6rb dq+plitude of vibrating air molecules of 0.13 mm at 300 Hz?    dB

参考答案: 130±2%


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