What is the wavelength of the sound emitted by an airplane flying at an elevation of...
What is the wavelength of the sound emitted by an airplane flying at an elevation of 40,000 feet where the temperature is -52°C? The frequency of the noise from the engines is 99 Hz. Express answer to two decimal places.
Homework Answers
the velocity of sound at temperature "T"
V = 331 + 0.6 T
= 331 + 0.6 x ( -52°C )
= 299.8 m/sec
= C/
= C /
= 299.8 / 99
= 3.02828 m
the wavelength of the sound emitted by an airplane
is = 3.02828
m
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