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## Homework Statement

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?

## Homework Equations

ok, so I really know is: speed of wave=frequency*wavelength....

## 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!