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A police car horn emits a sound at a frequency 240 Hz When the car is at rest . If the sleed of the sound is 330m/s the frequency heard by an observer who is approaching the car ay a speed of 11m/s is how much

Answer» A police car horn emits a sound at a frequency 240 Hz When the car is at rest . If the sleed of the sound is 330m/s the frequency heard by an observer who is approaching the car ay a speed of 11m/s is how much


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