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A state trooper chases a speeder along a straight road; both vehicles move at 160 km/h. The siren on the trooper's vehicle
1 answer
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An ambulance with a siren emitting a whine at 1600 Hz overtaken and passes a cyclist pedaling a bike at 2.44 m/s. After being
1 answer
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An acoustic burglar alarm consists of a source emitting waves of frequency 28.0 kHz. What is the beat frequency between the
0 answers
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