and they are moving toward each other. The red car is moving toward the blue ca,

Question

and they are moving toward each other. The red car is moving toward the blue ca, which is stationary. The blue car is moving toward the red car, which is stationary. What happens to the Doppler effect in air (i.e. the shift in frequency of a sound wave) as the temperature increases? It is greater at higher temperatures, but only in the case of a moving source and a stationary observer. It is greater at higher temperatures, but only in the case of a moving observer and a stationary source. It is greater at higher temperatures than at lower temperatures. It is less at higher temperatures than at lower temperatures. The Doppler effect does not change as the temperature increases.

Explanation / Answer

C As temp increases, speed of sound in air also increases thus increasing frequency.

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