Sun January 20, 2013 By: Abhishek T Rajan

A sound wave has a frequency of 5 kHz and wavelength of 20 cm. How long will it take to travel 2 km? Will it be audible to a man standing there?

Expert Reply
Mon January 21, 2013
speed=frequencyx wavelength
2000/t =5000x20/100
5kHz is in the audible rangeof 20-20000Hz or 20Hz-20kHz, it will be audible.
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