A police car has a 1000hz siren it is traveling at 35ms on
A police car has a 1000Hz siren. It is traveling at 35m/s on a day when the speed of sounds through air is 350m/s. The car approaches an observer who is standing along the roadside. What change of frequency does the observer hear?
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a steel bar is subjected to a vibration at one end with an amplitude of 0001 meters and a frequency of 250 hz matches
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a police car has a 1000hz siren it is traveling at 35ms on a day when the speed of sounds through air is 350ms the car
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he-ne lasers are often used in physics demonstrations they produce light of wavelength 633nm and a power of 0650mw
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