a sound wave has frequency 2 kilohertz and wavelength 40cm calculate time it takes to travel 4 km
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frequency =2khz
2×1000
=2000hz
wavelength =40 cm
40 ÷100=0.4m
speed=f×w
2000×0.4=800m/s
distance=4km
4×1000=4000m
d=s×t
4000/800=t
t=5sec
2×1000
=2000hz
wavelength =40 cm
40 ÷100=0.4m
speed=f×w
2000×0.4=800m/s
distance=4km
4×1000=4000m
d=s×t
4000/800=t
t=5sec
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