A brother and sister try to communicate by transmitting sound waves along a stri
ID: 2042277 • Letter: A
Question
A brother and sister try to communicate by transmitting sound waves along a string tied between two tin cans. The string is 9.5 m long, has a mass of 21 g, and is pulled taut with a particular tension.(a) If the tension is increased, does a wave take more, less, or the same time to travel from one end to the other?
(b) Calculate the time of travel for tensions of 10.5 N and 11.5 N.
2 .
Your response differs significantly from the correct answer. Rework your solution from the beginning and check each step carefully. s (10.5 N)
3 .
Your response differs significantly from the correct answer. Rework your solution from the beginning and check each step carefully. s (11.5 N)
Explanation / Answer
(a) If the tension is increased it means the velocity will increase because they are related by so a faster velocity means less travel time (b) using the equation above and plugging in T=10.5N ?=.021/9.5 kg/m we get v=68.92 m/s then we can find the time with t=v/L t=9.5/68.92 t=.1378 seconds When we redo the calculations for T=11.5N we get t=.1317 seconds
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