sound waves in air?

jethaz · #1 29-06-2007, 10:15

For sound waves in air with frequency 1000 Hz, a displacement amplitude of 1.2*10^-8 m produces a pressure amplitude of 3.0*10^-2 Pa above and below atmospheric pressure p_a=1.013*10^5Pa. Water at 20 C has a bulk modulus of 2.2*10^9 Pa, and the speed of sound in water at this temperature is 1480 m/s.For 1000-Hz sound waves in 20 C water, what displacement amplitude is produced if the pressure amplitude is 3.0*10^-2 Pa?

hallmanjj · #2 29-06-2007, 21:45

This is called cheating, and just asking for the answer won't help you learn anything. Instead, you should ask conceptual questions so as to better understand the material.

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