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A brother and sister try to communicate with a string tiedbetween two tin cans.

ID: 1753816 • Letter: A

Question

A brother and sister try to communicate with a string tiedbetween two tin cans. If the string is 9.5 m long, has a mass of25 g and is pulled taut with a tension of 7.0 N, how muchtime does it take for a wave to travel from one end of the stringto the other? A brother and sister try to communicate with a string tiedbetween two tin cans. If the string is 9.5 m long, has a mass of25 g and is pulled taut with a tension of 7.0 N, how muchtime does it take for a wave to travel from one end of the stringto the other? If the string is 9.5 m long, has a mass of25 g and is pulled taut with a tension of 7.0 N, how muchtime does it take for a wave to travel from one end of the stringto the other?

Explanation / Answer

          Given that the length of the string is L = 9.5 m            Massof the string is m = 25g = 0.025 kg           Tension in the string is T = 7.0N ---------------------------------------------------------------        Velocity of the wave inthe string is V = T/                                                                 =T*L/m                                                                  =7.0N*9.5m / 0.025kg                                                                  =51.57 m/s       Time taken is t = L /V                               =9.5m / 51.57 m/s                               =0.184s