The longest pipe on a certain organ is 5.34 m. (a) what is the frequency f3 (at 0.00°c) if the pipe is closed at one end?

For a pipe open at both ends, fund frequency (Fo) given byFo = v / 2L

v = velocity of sound = 340 m/s (at about 20ºC)

Fo = 340/2*5.34 = 31.8 Hz

While for the one closed at one end and open at the other end ...

For a pipe open at one end, fund frequency (Fo) given byFo = v/4L

Fo = 340/4*5.34 = 15.9 Hz