A wave has frequency of 3kHz and a wavelength 45cm. How long will it take to travel 1.8km
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Answer:Velocity of wave = freq.× wavelength
So velocity of wave will be,
3000Hz × 0.45m = 1350 m/s
So time taken to travel 1.8km will be
1800/1350 = 1.3sec(approx.
I hope it helps you.☺
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