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R-134a in piston-cylinder arrangement is at 700 kPa and 80 degrees celcius. It is now cooled at a conswtant pressure to saturated liquid (state 2), at which point the piston is locked with a pin. The cooling continues to -10 degrees celcius (state 3). Show the processes 1 to 2 and 2 to 3 on one P-v and one T-v diagram.
consider a large plane wall of thickness l 0. 5 m. the wall surface at x 0 is insulated while the surface at x l is
an automobile radiator may be viewed as a cross-flow heat exchanger with both fluids unmixed. water with a flow rate of
The car travels up the hill with a speed of v = (0.4s) m/s, where s is in meters, measured from A. Determine the magnitude of its acceleration when it is at point s = 50 m, where p = 500 m.
1. a commercial refrigerator keeps food fresh at -12 ordmc. it is estimated that the refrigerator removes 3300 kjhr
a 60 mm bore 02 series double row angular contact ball bearing has a 15 degrees contact angle. the outer ring rotates
an undeformed specimen of some alloy has an average grain diameter of 0.04 mm. you are asked to reduce its average
refrigerant-134a enters the evaporator coils placed at the back of the freezer section of a household refrigerator at
A body having a mass of 46 kg rests on a horizontal planse for which the coefficiant of friction f = 0.4. A force P acts ofn the body at an angle of 20 degrees with the horizontal. Find its magnitude for impending motion.
the 3-kg slender rod rotated in a vertical plane about a pivot at b. a spring of constant k 300 nm and of unstretched
at standard atmospheric temperature and pressure 25 c and 1 atm how many moles of dry air be present in a room having a
the automobile shown has 1200kg mass with center of gravity at point g and all wheel have the same 0.34m radius if the
a pulley with diameter d 27in weighs 80 lb. it is mounted on a diameter d 2-in axle. a weight of 1000 lb is to be
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