Answer to Question #19558 in Mechanics | Relativity for miks

Question #19558
Explain how a driver of a moving car hears a siren but
can NOT hear the pitch of the siren changing.
1
Expert's answer
2012-11-28T09:08:55-0500
The phenomenon has to do withthe Doppler effect or shift. The driver, i.e. receiver of the acoustic signal, is moving at a certain non-zero speed, so the perceived acoustic wave frequency (which determines the pitch) is different from that emitted by the source (i.e. the siren).

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Comments

Assignment Expert
03.12.12, 15:20

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miks
02.12.12, 21:46

thank you so much! it really helped! :)

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