Part (a) How has the increase in temperature from the morning to the afternoon altered the speed of sound in air? MultipleChoice : | 1) The temperature increase has not altered the speed of sound in air; it's only increased the wavelength of the sound. 2) The temperature increase has not altered the speed of sound in air; it's only decreased the wavelength of the sound. 3) The temperature increase has not changed the speed, wavelength, or frequency of the sound. 4) The temperature increase has increased the speed of sound in air. 5) The temperature increase has decreased the speed of sound in the air. 6) The temperature increase has not altered the speed of sound in air; it's only increased the frequency of the sound. 7) The temperature increase has not altered the speed of sound in air; it's only decreased the frequency of the sound. Part (b) How has the increase in temperature changed the frequency of the standing waves on the strings of the stringed instruments? MultipleChoice : 1) The frequency has increased because the tension in the strings has increased. 2) There is not enough information. 3) The frequency has decreased because the tension in the strings has decreased. 4) The frequency has increased because the density of the surrounding air has increased. 5) The frequency has decreased because the density of the surrounding air has decreased. 6) The frequency has not changed. Part (c) To retune their stringed instruments to the orchestra players must: MultipleChoice : | 1) Increase the amplitude of the standing waves they create on the strings. 2) None of the above. 3) Increase the tension in the strings. 4) Reduce the tension in the strings. 5) Decrease the amplitude of the standing waves they create on the strings. 6) Replace the strings with ones that are more massive

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 17.70AP: A siren mounted 011 the roof of a firehouse emits sound at a frequency of 900 Hz. A steady wind is...

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An orchestra contains both string and wind instruments. The orchestra tunes their instruments in the morning at a temperature at Tc=15 degrees celsius. As they play, the temperature rises in the afternoon to Th= 30 degrees celsius and falls in the later evening back to Tc= 15 degrees celsius. As usual, the speed of sound in air increases with increasing temperature.

Part (a) How has the increase in temperature from the morning to the afternoon altered the speed of sound in air?
MultipleChoice :
1) The temperature increase has not altered the speed of sound in air; it's only increased the wavelength of the sound.
2) The temperature increase has not altered the speed of sound in air; it's only decreased the wavelength of the sound.
3) The temperature increase has not changed the speed, wavelength, or frequency of the sound.
4) The temperature increase has increased the speed of sound in air.
5) The temperature increase has decreased the speed of sound in the air.
6) The temperature increase has not altered the speed of sound in air; it's only increased the frequency of the sound.
7) The temperature increase has not altered the speed of sound in air; it's only decreased the frequency of the sound.
Part (b) How has the increase in temperature changed the frequency of the standing waves on the strings of the stringed instruments?
MultipleChoice :
1) The frequency has increased because the tension in the strings has increased.
2) There is not enough information.
3) The frequency has decreased because the tension in the strings has decreased.
4) The frequency has increased because the density of the surrounding air has increased.
5) The frequency has decreased because the density of the surrounding air has decreased.
6) The frequency has not changed.
Part (c) To retune their stringed instruments to the orchestra players must:
MultipleChoice :
1) Increase the amplitude of the standing waves they create on the strings.
2) None of the above.
3) Increase the tension in the strings.
4) Reduce the tension in the strings.
5) Decrease the amplitude of the standing waves they create on the strings.
6) Replace the strings with ones that are more massive.

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what happens if the temp drops back to Tc? What do you need to do to the instruments then?

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