08-02-2017
Physics

contestada

According to the Doppler effect, the sound of a police car siren is (A. Quieter B. Louder) and (A. Higher B. Lower) pitched as it approaches the observer.

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khaleekthomas khaleekthomas

08-02-2017

The best answer i can get give u is B i hope this helps

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sethsalinas45 sethsalinas45

13-02-2017

It would B and A hope this helps

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