A sound wave has a wavelength 60 cm and of frequency 670 Hearts (Hz). How long we takes to treavle the distance of 1.34 km
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speed=frquency× wavelength
speed=distance/time
f×wavelength =distance/time
670×60×10^-2 m=1.34×10^3m/time
time=1.34×10^3/670×60×10^-2 m
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