1. The problem statement, all variables and given/known data Standing waves on a 1.3 m long string that is fixed at both ends are seen as successive frequencies of 24Hz and 48 Hz. What is the fundamental frequency? 2. Relevant equations fo = nv/4L 3. The attempt at a solution Okay, so I don't really know if that is the right equation, so I can't really see how I'm supposed to solve for this... Please help!