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Question:
A mass of 8 kg gas expands within a flexible container so that p-v relationship is of the form Pv1.2 = const.The initial pressure is 1000 kpa and the initial volume is 1 m3. The final pressure is 5 kpa . If specific internal energy of the gas decreases by 40 kj/kg,find theheat transfer in magnitude and direction.
Liquid water at 200 kPa and 20 C is heated in a chamber by mixing it with superheated steam at 200 kPa and 150 C. Liquid water enters the mixing chamber at a rate of 1.3 kg/s, and the chamber is estimated to lose heat to the surrounding air at 25 C a..
two channels are welded to a rolled w section as shown. determine the moments of inertia and the radii of the gyration
a gas turbine is designed to produce 3000hp when using air at a maximum inlet temperature of 650k and assuming a heat
hockey player a carries the puck on his stick and moves in the direction shown with a speed va4 ms. in passing the puck
Calculate the change in free-energy associated with the formation of a critical spherical nucleus in pure liquid nickel that is 200 ºC under cooled. Properties of Nickel: Heat of Fusion 2660 J/cm3; Surface Energy 255x10-7 J/cm2 ; Freezing Temperatur..
The boom OA carries a load P and is supported by two cables as shown. Knowing that the tension in cable AB is 183 lb and that the resultant of the load P and of the forces exerted at A by the two cables must be directed along OA, determine the tensio..
a diagnostic test is designed to detect a cancer precursor enzyme that exists in 1 of every 1000 people. the test
consider an infinitely large homogeneous mixture of 235u and a moderating material. determine the ratio of
a column is 50 in. long and is built in at both ends. the column cross section is 1.5 x 3.5 in and is made from 1030 hr
an egg initially at rest is dropped onto a concrete surface it breaks. prove that the process is irreversible. in
Calculate the deflection from torsional moment Mt and bending moment Mb and, then discuss the deflection from the torsional moment Mt compared to the result of 2-1)
Nitrogen flows through a converging-diverging nozzle designed to operate at a Mach number of 3.0. It it is subjected to an operating pressure ratio of 0.5: Determine the Mach number at the exit.
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