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Two children stretch a jump rope between them and send wave pulses back and forth on it. The rope is 3.1 m long, its mass

Two children stretch a jump rope between them and send wave pulses back and forth on it. The rope is 3.1 m long, its mass is 0.250 kg, and the force exerted on it by the children is 43 N.

(a) What is the linear mass density of the rope (in kg/m)?

(b) What is the speed of the waves on the rope (in m/s)?

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