Physics, 10.12.2019 04:31 simiyi1983
Amotorcycle is travelling at a constant velocity of 30ms. the motor is in high gear and emits a hum of 700hz. the speed of sound in air is 340ms, and there is no wind. a. what is the period of the sound waves emitted from the motorcycle? b. what is the distance travelled by the motorcycle during one period of the sound oscillation? c. what is the distance travelled by a sound wave in air during one period of oscillation? d. the humming of the motorcycle is a sound that is emitted in all directions and, once emitted, it travels in the reference frame of the still air at the speed of sound in air. consider the emitted sound that is moving directly out in front of the motorcycle
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Atypical jetliner lands at a speed of 146 mi/h and decelerates at the rate of (10.4 mi/h)/s. if the jetliner travels at a constant speed of 146 mi/h for 1.5 s after landing before applying the brakes, what is the total displacement of the jetliner between touchdown on the runway and coming to rest?
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Awelder using a tank of volume 7.50×10^-2 m^3 fills it with oxygen (with a molar mass of 32.0 g/mol ) at a gauge pressure of 3.30×10^5 pa and temperature of 37.1 ∘c. the tank has a small leak, and in time some of the oxygen leaks out. on a day when the temperature is 23.1 ∘c, the gauge pressure of the oxygen in the tank is 2.00×10^5 pa . a) find the initial mass of oxygen. b) find the mass of oxygen that has leaked out.
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Amotorcycle is travelling at a constant velocity of 30ms. the motor is in high gear and emits a hum...
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