One of the harmonics of a column of air open at one end and ...

[jayhills49]

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

[k.lashomb]

Answer to Question 1

B

Answer to Question 2

E

[jayhills49]

Thank you!

[k.lashomb]

Always glad to help...