Question

A tube with a length L is closed at both ends and is filled with air. The wavelength of the fundamental mode of this tube is given by L*c, where c is a dimensionless constant. What is this constant, c, numerically? Also, the frequency of the first overture is how many times the fundamental frequency of this closed tube (numerically)?

Answer 1

start in the middle. the resonance to each end is 1/4 lambda, so the totalresonance is 1/2 lambda. C is 1/2

Answer 2

I tried it but the answer is still wrong =/. I'm not so sure if this has something to do with the other equation n = c/v but I doubt it.