What is the intensity in watts per meter squared of 85.8 dB sound? The reference threshold intensityis 10-12=Wm²I=Wm²

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University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter17: Sound

Section: Chapter Questions

Problem 68P: The amplitude of a sound wave is measured in terms of its maximum gauge pressure. By what factor...

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Problem 3: The human ear can detect a minimum intensity of Io = 10-12 W/m2, which has a sound intensity of 0 dB.Randomized Variables β = 45 dB If the student hears a sound at 45 dB, what is the intensity of the sound?Numeric : A numeric value is expected and not an expression.I = __________________________________________ Problem 4: A student exchanges the stock headphones (β1 = 87 dB) for her mp3 player for a new set that is louder (β2 = 95 dB). If the first set produced a power of P1 = 0.5 W how much power does the new set produce, P2 in W?Numeric : A numeric value is expected and not an expression.P2 = __________________________________________
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What is the intensity in watts per meter squared of 85.8 dB sound? The reference threshold intensity is 10-12 = W m² I= W m²