Physics, 02.12.2019 19:31 javonteoshamccaliste
Why is it more to know a tornadoes velocity rather than its speed
Answers: 3
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?
Answers: 1
Physics, 22.06.2019 04:30, AShevel6767
In a system, when potential energy decreases, then entropy also decreases. true false
Answers: 3
Physics, 23.06.2019 01:30, martinezkimberly706
Match each type of lever with the correct diagram. 1. first-class 2. third-class 3. second-class
Answers: 3
Why is it more to know a tornadoes velocity rather than its speed...
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