Engineering

Engineering, 11.07.2019 01:30, eg112105

Apiston-cylinder holds air at an initial pressure of p1=100 kpa and temper ature of t=2c the piston-cylinder (which holds the air at constant pressure) is heated until its volume doubles from an initial volume of v1 1000 cm3 to a final volume of to v2 2000 cm2 (for air: r 0.2870 kj/kg/k, cp-1.005 k/kgk, c,-0.718 k/kg/k) a)- find the heat transferred to the water (kj) b)- find the work done by the piston-cylinder (kj).

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Engineering, 11.07.2019 03:20, samara49

Apiston-cylinder initially holds a volume of v-0. 5 m3 of air at an initial pressure of p1-100 kpa and temperature of t1 20? c. the piston-cylinder compresses the air down to a final volume of v2 -0.1 m3 while the temperature of the air is held constant at t 20 °c for air r-0.287 kj/kgk) 8. a. find the heat transferred during this process (kj) b. find the work done during this process (kj)

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Engineering, 14.09.2019 01:30, Calliedevore

Avertical piston-cylinder device initially contains 0.1 m3 of air at 400 k and 100 kpa. at this initial condition, the piston is resting on a stop. the piston-cylinder device is connected to a supply line with air at 400 k and a pressure of 500 kpa. the valve between the supply line and the piston-cylinder device is opened and is left open until the pressure in the piston-cylinder device reaches 500 kpa. the piston is observed to start moving when the pressure in the cylinder is 200 kpa and the piston continues to rise until it reaches a second stop. at the second stop, the piston-cylinder volume is 0.2 m3 . the final temperature and pressure in the piston-cylinder device are 440 k and 500 kpa, respectively. molecular weight of air = 28.97 kg/kmol. determine heat transfer (kj) during the entire process. indicate whether it is into the system or out of the system.

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Engineering, 03.10.2019 02:00, Briii582

Avertical piston-cylinder device initially contains 0.1 m3 of air at 400 k and 100 kpa. at this initial condition, the piston is resting on a stop. the piston-cylinder device is connected to a supply line with air at 400 k and a pressure of 500 kpa. the valve between the supply line and the piston-cylinder device is opened and is left open until the pressure in the piston-cylinder device reaches 500 kpa. the piston is observed to start moving when the pressure in the cylinder is 200 kpa and the piston continues to rise until it reaches a second stop. at the second stop, the piston-cylinder volume is 0.2 m3 . the final temperature and pressure in the piston-cylinder device are 440 k and 500 kpa, respectively. molecular weight of air = 28.97 kg/kmol. determine heat transfer (kj) during the entire process. indicate whether it is into the system or out of the system.

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Physics, 19.10.2019 01:30, cnejcnefjvefven47

Apiston-cylinder system which contains 0.005 g of air is initially at a pressure of 140 kpa and a temperature of 50 °c. later,the 2.0 cm diameter piston is slowly moved downward a distance of 5.76 mm, compressing the air in the cylinder. determine the required heat transfer from the system in [j] in order to maintain the cylinder pressure at a constant value.

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Apiston-cylinder holds air at an initial pressure of p1=100 kpa and temper ature of t=2c the piston-...

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