answer both Q3:An object undergoes simple harmonic motion. When it momentarily passes through the equilibrium position, which statement is true about its potential energy U and kinetic energy K? minimum U, maximum K, maximum U, maximum K, minimum U, minimum K, maximum U, minimum K, Q4: If the sound volume decreases from 120 dB to 50 dB, then the sound volume decreases by a factor of:

answer both Q3:An object undergoes simple harmonic motion. When it momentarily passes through the equilibrium position, which statement is true about its potential energy U and kinetic energy K? minimum U, maximum K, maximum U, maximum K, minimum U, minimum K, maximum U, minimum K, Q4: If the sound volume decreases from 120 dB to 50 dB, then the sound volume decreases by a factor of:

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 52P: (a) If a submarine’s sonar can measure echo times with a precision of 0.0100 s, what is the smallest...

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(a) What is the speed of sound in a medium where a 100-kHz frequency produces a 5.96-cm wavelength? (b) Which substance in Table 17.1 is this likely to be?
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Q#3:Why the noisepollution is considered a serious occupational health hazard.How can we prevent and control noise pollution in the workplace.What are the measurement units of noise? How can we measure the sound pressure level of the noise generated by a machine?