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Author Question: One of the harmonics of a column of air open at one end and closed at the other has a frequency of ... (Read 86 times)

jayhills49

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on: Jul 29, 2018
One of the harmonics of a column of air open at one end and closed at the other has a frequency of 448 Hz and the next higher harmonic has a frequency of 576 Hz. What is the fundamental frequency of the air column?
 
  A) 32 Hz
  B) 64 Hz
  C) 88 Hz
  D) 128 Hz
  E) 256 Hz

Question 2

An air column, open at one end and closed at the other, is being designed so that its second lowest resonant frequency is 440 Hz. What should be the length of the column if the speed of sound in air is 340 m/s?
 
  A) 0.386 m
  B) 0.772 m
  C) 1.16 m
  D) 0.193 m
  E) 0.580 m


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k.lashomb

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Reply #1 on: Jul 29, 2018
Answer to Question 1

B

Answer to Question 2

E


jayhills49

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Reply #2 on: Jul 29, 2018
Thank you!


k.lashomb

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Reply #3 on: Jul 29, 2018
Always glad to help...


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