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Physics, 21.06.2019 15:00 dquezada21

An ambulance emits a frequency of 450 hz from its siren. what frequency is heard by a man as the ambulance moves toward him? less than 450 hz more than 450 hz 450 hz 0 hz

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An ambulance emits a frequency of 450 hz from its siren. what frequency is heard by a man as the amb...
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