Two cars approaching each other, The first car is a police car that moves at 72 km/h while the second car moves at 90 km/h, The police car started its siren with a frequency of 650 Hz. If the speed of the sound is 350 m/s, then what is the frequency of the sound heard by the driver of the second car from the police car?
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What would be the result of an alpha particle coming into a magnetic field? a) the alpha particle will stop moving. b) the alpha particle will reverse its direction. c) the alpha particle will be deflected in a curve path. d) the alpha particle will continue to travel in a straight line.
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Two cars approaching each other, The first car is a police car that moves at 72 km/h while the secon...
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