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What is the quality of the sound of a fire truck’s siren when it moves toward a stationary hearer? What is the quality of the sound of a fire truck’s siren when it moves away from a stationary hearer?.

Respuesta :

The quality of sound of a fire truck’s siren increase when it moves towards the stationary observer.

Doppler effect:

It apparent frequency or pitch of the sound wave is changing for the observer when the source is relatively moving.

  • When the source comes towards the static observer the pitch of the sound is increasing.
  • When the source goes away from the observer, the pitch of the sound decreases.

Therefore, the quality of sound of a fire truck’s siren increase when it moves towards the stationary observer.

Learn more about the Doppler effect:

https://brainly.com/question/1330077

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