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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» 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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