Here is the problem which I am struggling on, please help me!
Problem: A circus performer stretches a tightrope between two towers. He strikes one end of the rope and sends a wave along it toward the other tower. He notes that it takes the wave 0.795 s to reach the opposite tower, 20.0 m away. If a 1.00-m length of the rope has a mass of 0.250 kg, find the tension in the tightrope.
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Show all work, use additional paper if necessary.