Question

The brass pipe pictured to the right has few of the trumpet’s attributes. There is no mouthpiece,

no bell, and no valves, but it is a brass tube that you could buzz your lips into. What is the lowest
note that would be possible to blow on this pipe?
10 cm

Answer 1

Answer: the lowest note that would be possible to blow on this brass pipe is approximately 1700 Hz

Explanation: f = c / (2L)

where c is the speed of sound in brass, which is around 340 m/s.

Changing over the length of the pipe to meters, we have:

L = 10 cm = 0.1 m

Stopping within the values, we get:

f = 340 / (2 x 0.1) = 1700 Hz