A sound wave has a frequency of 5khz and wavw length 65•5cm how long will it take to travel 7•8hectrometer
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Answer: Speed of sound wave v=νλ=2000×0.35=700 m/s
Distance d = 1.5 km
= 1500 m
Time t = d / v
= 1500 / 700
= 2 s
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