1. The problem statement, all variables and given/known data What is the wave speed in a brass wire with a radius of 4.65×10-4 m stretched with a tension of 128 N? The density of brass is 8.60×103 kg/m^3. 2. Relevant equations v=square root of T/u 3. The attempt at a solution I have already found the cross sectional area but am unsure of what to do from there.