Physics, 04.11.2021 17:50, Braxtonw875
An alert physics student stands beside the tracks as a train rolls slowly past. He notes that the frequency of the train whistle is 441 Hz when the train is approaching him and 422 Hz when the train is receding from him. Using these frequencies, he calculates the speed of the train. What value does he find
Answers: 1
Physics, 21.06.2019 13:00, Maria3737
The two most prominent wavelengths in the light emitted by a hydrogen discharge lamp are 656 nm(red) and 486 nm (blue). light from a hydrogen lamp illuminates a diffraction grating with 520lines/mm , and the light is observed on a screen 1.5m behind the grating. part a what is the distance between the first-order red and blue fringes? express your answer to two significant figures and include the appropriate units.
Answers: 1
Physics, 21.06.2019 21:30, AleOfficial101
Aparticle with mass 1.81×10−3 kg and a charge of 1.22×10−8 c has, at a given instant, a velocity v⃗ =(3.00×104m/s)j^. what are the magnitude and direction of the particle’s acceleration produced by a uniform magnetic field b⃗ =(1.63t)i^+(0.980t)j^?
Answers: 2
An alert physics student stands beside the tracks as a train rolls slowly past. He notes that the fr...
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