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(a) Calculate the efficiency of a reversible engine that operates between the temperatures 620.0° C and 345.0° C.
(b) If the engine absorbs 105.0 kcal of heat from the hot reservoir, how much does it exhaust to the cold reservoir?
kcal
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By what factor will the rms speed of gas molecules increase if the temperature is increased from 40 ?C to 150 ?C
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