Physics, 24.10.2021 07:40 jamayas2453
Explain how Newton’s third law of motion is at work when you walk
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Acoal-fired plant generates 600 mw of electric power. the plant uses 4.8 x 10^6 kg of coal each day, and the heat of combustion of coal is 3.3x 10^7 j/kg. the steam that drives the turbines is at a temperature of 300° c, and the exhaust water is at 37° c. (a) what is the overall efficiency of the plant for generating electric power? (b) how much thermal energy is exhausted each day? (c) what is the change in entropy of the universe for this heat engine? (d) using the same heat reservoirs, what is the maximum possible (carnot) efficiency for a heat engine?
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Acar travels in reverse. it covers 150 meters in 12 seconds what is the velocity of the car what is the speed of the car
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If we decrease the time it takes for a car to travel over the same distance this will
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Asatellite orbits earth in a circular orbit. does earth's gravity do work on the satellite? explain.
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Explain how Newton’s third law of motion is at work when you walk...
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