How Long is an Organ Pipe That Resonates at 128Hz?

[soulja101]

Homework Statement

an organ pipe, open at both ends, esonantes ats its 1st resonant lenth with a frequency of 128hz. what is thelength of the pipe if the speed of sound is 346m/s

Homework Equations

the open colum patterns

The Attempt at a Solution

i just can't get it

 

[AlephZero]

From the univeral wave equation, what is the wavelength at the given frequency and wave speed?

From the open column patterns, how many wavelengths does the length of an open pipe contain? (Hint, the answer is not 1)