gc textbook chapter 12 Sound (id: 4a5a35444)

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]
A 50-dB sound wave s-v l83 nms0ez*bxink -trikes anx8q7hyd8b-q06 0axe+ malqlv eardrum whose area is $5 \times10^{ -5} m^2$ (a) How much energy is absorbed by the eardrum per second?    $ \times10^{-12}$W (b) At this rate, how long would it take your eardrum to receive a total energy of 1.0 J?   $ \times10^{ 3}$yr

参考答案:
空格1: 5±2%  空格2: 6.3±2% 


本题详细解析:

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