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f15_ps05_spring04

f15_ps05_spring04 - Unied Engineering Fluids Problems F15...

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Unified Engineering Spring 2004 Fluids Problems F15 F15. Our analysis for determining the speed of sound assumed that the sound wave had infinitesimal strength. But for the 120 dB sound waves produced by Linkin Park near the stage, this assumption may be suspect. a) One suitable definition of sound dB level is: p dB = 20 log 10 20 × 10 6 Pa where p is a pressure variation caused by an average passing sound wave. Treating this sound wave
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