Engineering, 19.12.2019 01:31 Sruyle51230
Four kilograms of an ideal gas are contained within a piston-cylinder device. the gas undergoes a polytropic process with a polytropic exponent of 1.5. the initial pressure is 3 bars, the initial volume is 0.1 m3, and the final volume is 0.2 m3. if the change in specific internal energy of the gas during the process is -4.6 kj/kg, determine the net heat transfer, in kj.
Answers: 2
Engineering, 04.07.2019 18:10
Aflywheel accelerates for 5 seconds at 2 rad/s2 from a speed of 20 rpm. determine the total number of revolutions of the flywheel during the period of its acceleration. a.5.65 b.8.43 c. 723 d.6.86
Answers: 2
Engineering, 04.07.2019 18:20
Air is compressed isentropically from an initial state of 300 k and 101 kpa to a final temperature of 1000 k. determine the final pressure using the following approaches: (a) approximate analysis (using properties at the average temperature) (b) exact analysis
Answers: 1
Engineering, 06.07.2019 03:20
Figure out the odd statement about ceramics in the following (a) good insulators of heat and electricity (b) usually less desire than metals (c) ductile in nature (d) contains both metallic and nonmetallic elements
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Engineering, 06.07.2019 03:30
Acubic shaped box has a side length of 1.0 ft and a mass of 10 lbm is sliding on a frictionless horizontal surface towards a 30 upward incline. the horizontal velocity of the box is 20 ft/s. determine how far up the incline the box will travel (report center of mass distance along the inclined surface, not vertical distance)
Answers: 1
Four kilograms of an ideal gas are contained within a piston-cylinder device. the gas undergoes a po...
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