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1. A turning for of frequency 400 Hz is moved away from an observer with a speed of 2 m/s. What is the apparent frequency

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A turning for of frequency 400 Hz is moved away from an observer with a speed of 2 m/s. What is the apparent frequency of sound wave coming directly to the observer? Assume the speed of sound in air to be 335 m/s. O 397.63 Hz 323.23 HZ O 356.45 Hz O 404.25 HZ O 250.55 Hz

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