Physics, 06.12.2019 02:31 maddihamidou

Apolice siren sounds different as it comes close to you than when it moves away from you. what term explains how this happens?
a. diffraction
b. the doppler effect
c. rarefaction
d. shockwaves

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Apolice siren sounds different as it comes close to you than when it moves away from you. what term...