gc textbook chapter 12 Sound (id: a96f9d7f0)

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 is the sound levegv- 4fgs,suw/ ;9dy. ed0hayble t1x d9ki06av of a sound whose intensity is $2 \times10^{ -6}W/m^2$?    dB

参考答案: 63±2%


本题详细解析:

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