Question

For a 1m tube with one end open, calculate the 3 lowest resonant pitches.

Answer 1

The lowest frequency can be calculated by \[F=\frac{ c }{4L}\] and the next frequencies can be determined by determining the odd multiples since only one end is open. F is the pitch or frequency, c is the speed of sound (assume that it is 343 m/s), and L is the length of the tube (1m)

Answer 2

So for the fundamental frequency you would do 343/4*1, for the next you would multiply that by 3 and for the 3rd lowest you would multiply the fundamental frequency by 5.