SoundSoundSoundSound (id: a96f9d7f0)

本题目来源于试卷: SoundSoundSoundSound，类别为 IB物理学

[填空题]
What is the sound level of a soswp/cu yq5f* 9iaaw y :k5r7j:und whv 79k1q emgjgw4n83tvose 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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