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A person riding on a bus hears the sound from a horn on a car that is stopped. What is different about the sound when the bus is approaching the car compared to when the bus is moving away from the car?
You hear the high pitch of the siren of the approaching ambulance, and notice that its pitch drops
suddenly as the ambulance passes you. That is called the Doppler effect.
Paper#9210451 | Written in 27-Jul-2016Price : $19