Which transformation of energy occurs in a hydroelectric power plant?
a. potential energy to...
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Physics, 11.10.2019 03:30 red21120p718de
Which transformation of energy occurs in a hydroelectric power plant?
a. potential energy to chemical energy
b. chemical energy to potential energy
c. chemical energy to kinetic energy
d. kinetic energy to electrical energy
f. electrical energy to potential energy
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Physics, 21.06.2019 23:00, hunterdylan01
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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