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A sound wave has an intensity level of 129.8 dB in air. The density of air at 20.0C is = 1.20 kg/m3 (see Table 9.1).

A sound wave has an intensity level of 129.8 dB in air. The density of air at 20.0C is = 1.20 kg/m3 (see Table 9.1). The speed of sound in air at 20.0C is v = 343 m/s. What is the pressure amplitude

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