College Physics
OER 2016 Edition
ISBN: 9781947172173
Author: OpenStax
Publisher: OpenStax College
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Chapter 17, Problem 51PE
Calculate the first overtone in an ear canal, which resonates like a 2.40−cm−long tube closed at one end, by taking air temperature to be 37.0°C. Is the ear particularly sensitive to such a frequency? (The resonances at the ear canal are complicated by its nonuniform shape, which we shall ignore.)
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Calculate the first overtone in an ear canal, which resonates like a 2.40-cm-long tube closed at one end, by taking air temperature to be 37.0°C . Is the ear particularly sensitive to such a frequency? (The resonances of the ear canal are complicated by its nonuniform shape, which we shall ignore.)
Estimate the sound velocity of Xe (fcc crystal with lattice parameter of 6.202 Angstrom) from the phonon dispersion shown below.
Provide your answer in units of m/s with 2 digits precision, rounding off to two decimal place, i.e, the nearest hundredths. (time budget 10min)
14
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10
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0.
T [q00]
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frequency @ [10" rad/s]
Based on a grade 11 physics student, answer the following question:
Mr.T wants to know if he should wear a toque to bring the garbage outside on garbage day, but he doesn’t know how cold it is since his wifi went down, rats!
He decides to bust out his soprano opera voice and belt out a sound at 1499Hz (to which the neighbourhood dogs angrily respond.)If Mr.T records ¼ ? (the wavelength) of his voice on his handy-dandy wrist-operated oscilloscope as 5.42 x 10-2 m, then what is the temperature outside; should he wear a toque?
How much time does it take Mr.T to hear his echo if he remembers that the neighbour’s house is exactly 40.6m away from his front door (from his last experiment involving model rockets and a new/faster way to cut his grass. Don’t ask.)
Chapter 17 Solutions
College Physics
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