An airplane produces a sound wave with frequency 5 kHz and the wavelength 30 m . In how much time would the sound wave cover the distance of 4 km ???
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f = 5KHz = 5000Hz
wavelength = 30m
speed = frequency*wave length = 5000*30 = 150000 m/s = 150 km/s
distance = 4km
time required = 4/150 s = 2/75 second.please mark brainliest if it help
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