1. The problem statement, all variables and given/known data My teacher did NOT tell us how to do this. A Herschel tube is used to determine the frequency of a tuning fork held at the inlet. The temperature is 28 degrees Celsius and the initial path lengths around each side are 75 cm each. The right hand side is now extended as the fork is sounded and 3 minimums are hear, when the right side is extended so that the distance around is 235 cm. Determine the fork's frequency. 2. Relevant equations vsound= 332+0.6(T) Universal wave equation? 3. The attempt at a solution I honestly have no idea where to begin. I believe a minimum is complete destructive interference, and I have some vague idea that this involves the use of nodes and antinodes, but seriously, I have no idea what to do.