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A train standing in a station yard blows a whistle of frequency 400 Hz in...

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A train standing in a station yard blows a whistle of frequency 400 Hz in still air The wind starts blowing in the direction from the yard to the station with a peed of 10 m s What are the frequency wavelength and speed of sound for an observer standing on the station s platform Is the situation exactly identical to the case when the air is still and the observer runs towards the yard at a speed of 10 m s The speed of sound in still air can be taken as 340 m s

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