1. The problem statement, all variables and given/known data A closed air column is 60.0cm long. Calculate the frequency of the forks that will cause resonance at: a) the first resonant length b) the second resonant length Note that the speed of sound is 344m/s. 2. Relevant equations Ln = (2n - 1) * [tex]\lambda[/tex] / 4 fn = (2n - 1)f1, where f1 = V/4L and 4L = [tex]\lambda[/tex] 3. The attempt at a solution I cannot figure out what the actual magnitude of the resonant length is, and don't know how to begin solving the problem. Thanks.