Physics, 07.10.2020 08:01 dreamer197
What is your opinion on Moonman? ( Do not delete this saying it is "racist". it is simply a character from a commercial called Mac Tonight from mcdonalds )
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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 02:30
Acar moves at 12m/s and coasts up a hill with a uniform acceleration of -1.6m/s2. how far has it traveled after 6.0s?
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Physics, 22.06.2019 13:30
Global warming will produce rising sea levels partly due to melting ice caps but also due to the expansion of water as average ocean temperatures rise. to get some idea of the size of this effect, calculate the change in length of a column of water 1.00 km high for a temperature increase of 1.00ºc. note that this calculation is only approximate because ocean warming is not uniform with depth. (answer in ×10^{-3} −3 m)
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Physics, 22.06.2019 14:30
What was the first instrument to ever record an earthquake?
Answers: 1
What is your opinion on Moonman? ( Do not delete this saying it is "racist". it is simply a characte...
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