Which of the following statements are TRUE of the frequency of sound and the perception of pitch? Identify all that apply. A high pitched sound has a low wavelength. A low-pitched sound is a sound whose pressure fluctuations occur with a low period. If an object vibrates at a relatively high frequency, then the pitch of the sound will be low. The frequency of a sound will not necessarily be the same as the frequency of the vibrating object since sound speed will be altered as the sound is transmitted from the object to the air and ultimately to your ear. Two different guitar strings are used to produce a sound. The strings are identical in terms of material, thickness and the tension to which they are pulled. Yet string A is shorter than string B. Therefore, string A will produce a lower pitch. Both low- and high-pitched sounds will travel through air at the same speed. Doubling the frequency of a sound wave will halve the wavelength but not alter the speed of the wave. Tripling the frequency of a sound wave will decrease the wavelength by a factor of 6 and alter the speed of the wave. Humans can pretty much hear a low-frequency sound as easily as a high-frequency sound. Ultrasound waves are those sound waves with frequencies less than 20 Hz.

Physics for Scientists and Engineers, Technology Update (No access codes included)

9th Edition

ISBN:9781305116399

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter17: Sound Waves

Section: Chapter Questions

Problem 17.11OQ

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Which of the following statements are TRUE of the frequency of sound and the perception of pitch? Identify all that apply.

A high pitched sound has a low wavelength.
A low-pitched sound is a sound whose pressure fluctuations occur with a low period.
If an object vibrates at a relatively high frequency, then the pitch of the sound will be low.
The frequency of a sound will not necessarily be the same as the frequency of the vibrating object since sound speed will be altered as the sound is transmitted from the object to the air and ultimately to your ear.
Two different guitar strings are used to produce a sound. The strings are identical in terms of material, thickness and the tension to which they are pulled. Yet string A is shorter than string B. Therefore, string A will produce a lower pitch.
Both low- and high-pitched sounds will travel through air at the same speed.
Doubling the frequency of a sound wave will halve the wavelength but not alter the speed of the wave.
Tripling the frequency of a sound wave will decrease the wavelength by a factor of 6 and alter the speed of the wave.
Humans can pretty much hear a low-frequency sound as easily as a high-frequency sound.
Ultrasound waves are those sound waves with frequencies less than 20 Hz.

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