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What frequency does the motorcyclist hear

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A motorcyclist is traveling 40 m/s due west relative the ground. A fire truck is traveling on the same road, going east at 32 m/s and away from the car, having already passed it going the opposite direction. If the fire truck siren sounds at 687 Hz, what frequency does the motorcyclist hear? Sound speed in air: 348 m/s.

Reference no: EM132802510

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