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A sound wave traveling in 20.0ºC air has a pressure amplitude of 0.500 Pa. Calculate the intensity of this wave, and use this number to calculate the following: What intensity level (in dB) does the sound in the preceding problem correspond to? (Hint: two equations are needed for this problem. The density of air is 1.20 kg/m3 and the speed of sound in air at 20ºC is 343 m/s)
Sagot :
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