Physics, 21.04.2020 00:16 reticentrobbie
How might a nitrogen-oxygen atmosphere on the moon affect the range of temperatures on the moon?
A) An atmosphere might hold in heat, making the moon very hot
B) An atmosphere might block heat radiating from the sun, making the moon very cold
C) An atmosphere might moderate temperatures, making more or even, as on Earth
D) An atmosphere would have no effect on the range of temperatures on the moon
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?
Answers: 1
Physics, 22.06.2019 07:30
Tall pacific coast redwood trees can reach heights of about 100 m. if air drag is negligibly small, how fast is a sequola cone moving when it reaches the ground f it dropped from the top of a 100 m tree?
Answers: 1
How might a nitrogen-oxygen atmosphere on the moon affect the range of temperatures on the moon?
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