1. The problem statement, all variables and given/known data Two identical guitar strings are stretched with the same tension between supports that are not the same distance apart. The fundamental frequency of the higher-pitched string is 380Hz, and the speed of transverse waves in both wires is 200 m/s. How much longer is the lower-pitched string if the beat frequency is 4Hz? 2. Relevant equations None have worked! 3. The attempt at a solution Every yahoo answers solution has not worked for me. Please help!