Question

Determine the length of a wind instrument, assuming that it is modeled as a closed tube and that the lowest sound that it can play has a frequency of 69 Hz. The speed of sound in air is 343 m/s.

Answer 1

length = 1.24m

Step-by-step explanation:

velocity = frequency x wavelength

wavelength = velocity/frequency

w = 343/69 =4.97m

length = wavelength/4

length =4.97/4 =1.24m