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Why does the sound of a racing car engine change as it drives past us?
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As the racing car approaches, the sound waves in front of it get squashed together. These short sound waves make the engine's noise sound high-pitched. As the car moves past, the sound waves become stretched out behind it. The longer waves make the engine's note sound lower.
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Previous:
Back
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Book:
Best Ever Q&A
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Section:
Science & Technology
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Chapter:
Sound
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