A sound wave has a frequency of 3 khz and wavelength of 15cm.How much time will take to travel 2km.
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Answer:
4.4445s
Explanation:
we know that speed of a wave =frequency *wavelength
speed =3000hz*15/100lamda
speed=450m/s
time taken by the wave to travel 2km=1/450*2000m
=4.4445s
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