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{"ops":[{"insert":" An ideal gas at 2 bar is contained in a cylinder behind a piston with the initial volume being 0.02 m3 . When it expands reversibly to a final volume of 0.025 m3 according to a law \ud835\udc5d\ud835\udc49 1.5 = \ud835\udc50\ud835\udc5c\ud835\udc5b\ud835\udc60\ud835\udc61\ud835\udc4e\ud835\udc5b\ud835\udc61, where \ud835\udc5d is pressure and V is total volume, calculate the work done on the fluid by using \ud835\udc4a = \u2212 \u222b \ud835\udc5d\ud835\udc51\ud835\udc49 . \n0.25 kg of carbon dioxide (CO2) is compressed reversibly and isentropically from 2.0 bar 27 \u02daC to 4.0 bar. Assume CO2 is a perfect gas and its relative molecular mass is 44. Calculate:\n1) Specific gas constant of CO2 gas\n2) work done \n3) heat flow\nA relatively small nozzle is horizontally placed and a working fluid is passing through steadily. At the nozzle\u2019s inlet, the velocity of fluid is 5 m\/s and the specific enthalpy is 2200 kJ\/kg. At the exit from nozzle, its specific enthalpy is 2000 kJ\/kg. Calculate:\u00a0\n1)velocity at fluid exit\n2) The mass flow rate of fluid when the inlet area is 0.01 m2 and specific volume at inlet is 0.5 m3 \/kg\n"}]}

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