## Resonant length

1. The problem statement, all variables and given/known data
The 1st rensonat length of a closed air column occurs when the length is 30.0cm. what will the send ond and third be?

2. Relevant equations
I did the pattern thign like 3/4 but i got the wrong answer.

3. The attempt at a solution

i multplied the legth 3/4 but i got the wrong answer.
 PhysOrg.com science news on PhysOrg.com >> Ants and carnivorous plants conspire for mutualistic feeding>> Forecast for Titan: Wild weather could be ahead>> Researchers stitch defects into the world's thinnest semiconductor
 Second = 30.0*3=90.0 (cm) Third= 30.0*5 = 150.0(cm) u can draw graphs to know why.
 Recognitions: Homework Help A node is situated at the closed end an antinode at the open end. The "smallest structure" of the wavelenght that can accomodate this is a quarter wavelength.Which means that the wavelength is 120 cm. The next waveform will be three quarters of a wavelength (again a node at the closed end and an antinode at the open end).