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A siren generates a sound with a frequency of 250Hz but when you hear the...

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Physics

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A siren generates a sound with a frequency of 250Hz but when you hear the siren traveling down the road you measure a frequency of 280Hz Which answer best explains why you detect a different frequency than what the siren generates O a Since the frequency of the siren is higher the source of the sound wave must be moving away from you b Since the frequency of the siren is higher the source of the sound wave must be moving towards you Oc There are no explanations for why you measured a higher frequency than expected d The driver of the vehicle increased the frequency with a controller

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