General Questions 5. If the Fo of a sound has an amplitude of 50 dB, what is the amplitude of the second harmonic? 6. A spectra is a graph that has amplitude on the Y-axis and frequency on the X-axis. A harmonic spectra simply draws a vertical line at each frequency that a harmonic would be produced. The height of the line indicates the amplitude at which that harmonic would be produced. If the Fo of a sound is 125 Hz, please sketch a spectra (amplitude on the Y axis, frequency on the X axis) of the harmonic series up to the 4th harmonic. Include actual values on Y and X axis. 7. If the Fo of a sound is 130, what is the frequency of the third OCTAVE. 8. If the fourth harmonic vibrates at 1600 Hz, what is the Fo? 9. If the third octave vibrates at 1532 Hz, what is the Fo? How much less would the intensity be at the third octave? 10. If the third octave is produced at 1600 Hz at 25 dB, what is the frequency of the second harmonic? At what intensity would it be produced? 11. Indicate the appropriate number of nodes and antinodes for the 4th harmonic. Sketch this harmonic. How much higher in frequency would the fifth harmonic be than the first harmonic (Fo)? 12. Consider a 352 Hz pure tone which has been produced at 36 dB. Which harmonic would be the first that would not be produced?
General Questions 5. If the Fo of a sound has an amplitude of 50 dB, what is the amplitude of the second harmonic? 6. A spectra is a graph that has amplitude on the Y-axis and frequency on the X-axis. A harmonic spectra simply draws a vertical line at each frequency that a harmonic would be produced. The height of the line indicates the amplitude at which that harmonic would be produced. If the Fo of a sound is 125 Hz, please sketch a spectra (amplitude on the Y axis, frequency on the X axis) of the harmonic series up to the 4th harmonic. Include actual values on Y and X axis. 7. If the Fo of a sound is 130, what is the frequency of the third OCTAVE. 8. If the fourth harmonic vibrates at 1600 Hz, what is the Fo? 9. If the third octave vibrates at 1532 Hz, what is the Fo? How much less would the intensity be at the third octave? 10. If the third octave is produced at 1600 Hz at 25 dB, what is the frequency of the second harmonic? At what intensity would it be produced? 11. Indicate the appropriate number of nodes and antinodes for the 4th harmonic. Sketch this harmonic. How much higher in frequency would the fifth harmonic be than the first harmonic (Fo)? 12. Consider a 352 Hz pure tone which has been produced at 36 dB. Which harmonic would be the first that would not be produced?
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 83P: A 4.0-m-long pipe, open at one end and closed at one end, is in a room where the temperature is...
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For number 11 please sketch the harmonic on graphing paper.
Transcribed Image Text:General Questions
5. If the Fo of a sound has an amplitude of 50 dB, what is the
amplitude of the second harmonic?
6. A spectra is a graph that has amplitude on the Y-axis and
frequency on the X-axis. A harmonic spectra simply draws a
vertical line at each frequency that a harmonic would be
produced. The height of the line indicates the amplitude at
which that harmonic would be produced. If the Fo of a sound
is 125 Hz, please sketch a spectra (amplitude on the Y axis,
frequency on the X axis) of the harmonic series up to the 4th
harmonic. Include actual values on Y and X axis.
7. If the Fo of a sound is 130, what is the frequency of the third
OCTAVE.
8. If the fourth harmonic vibrates at 1600 Hz, what is the Fo?
9. If the third octave vibrates at 1532 Hz, what is the Fo? How
much less would the intensity be at the third octave?
10. If the third octave is produced at 1600 Hz at 25 dB, what is
the frequency of the second harmonic? At what intensity
would it be produced?
11. Indicate the appropriate number of nodes and antinodes for
the 4th harmonic. Sketch this harmonic. How much higher in
frequency would the fifth harmonic be than the first harmonic
(Fo)?
12. Consider a 352 Hz pure tone which has been produced at 36
dB. Which harmonic would be the first that would not be
produced?
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