Physics, 31.08.2019 18:00 babydolltia28
Aforce raises vertically a box of mass 14.0 kg through a distance of 20.0 m without causing acceleration. determine the work done on the box by the applied force. use g = 9.8 m. s-2
Answers: 1
Physics, 21.06.2019 23:00
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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Physics, 22.06.2019 03:00
1. a net force of 100 newton’s is applied to a wagon for 5 seconds. this causes the wagon to undergo a change in momentum of
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Physics, 22.06.2019 07:00
We put a force of 50n on an object and the acceleration is 100 m/s². what is the mass of the object?
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Aforce raises vertically a box of mass 14.0 kg through a distance of 20.0 m without causing accelera...
Computers and Technology, 22.11.2019 01:31