1. The problem statement, all variables and given/known data a cord of mass 0.65 Kg is stretched between two supports 28 m apart, The tension of the cord is 150 N, how long will it take a pulse to go from one end to the other? 2. Relevant equations ok, so I really know is: speed of wave=frequency*wavelength.... 3. The attempt at a solution I really have no clue, I know the distance, with the speed I can solve for frequency, but I don't know how to find time elapsed.... can anyone help me, I have no clue how to use tension in this problem!