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At the beginning of the compression stroke, the volume of a certain diesel engine cylinder is 1 liter and it is filled with air at 300 K and 100 kPa absolute. At the end of the compression stroke the air is at 800 K and 4280 kPa absolute. What is the work done by the piston on the air during the compression stroke?
a tank is rigid and contains r134a at 800 kpa and saturated conditions with quality equal to .75. from this condition a
Niobium forms a substitutional solid solution with vanadium. Compute the weight percent of niobium that must be added to vanadium to yield an alloy that contains 1.55 x 1022 Nb atoms per cubic centimeter. The densities of pure Nb and V are 8.57 an..
Lawn mower engines normally have finned surfaces directly attached to the engine block, with no radiator, in order to achieve the required cooling. Why might the cooling strategies be different in these two applications?
imagine that the heart acts as a pump. blood enters the heart from the lungs at 6mm hg and leaves to the rest of the
Air in piston/cylinder at 200 kPa, 600K is expanded in a constant-pressure process to twice the initial volume (state 2). At this point, the piston is locked with a pin and heat is transferred to a final temperature of 600K. Find the work and heat..
a tank contains fuel oil of relative density 0.75 and exerts a pressure of 12 knm2 onto the base of the tank. calculate
an electric motor has a rotor with a mass moment of inertia of 30 ft-lb-s2. what torque is required to accelerate it
consider a 77.0-kg man standing on a spring scale in an elevator. starting from rest the elevator ascends attaining its
a quantity of steam the original pressure and volume being 140 knm2 and 150 litres respectively is compressed to a
a piston cylinder device initially contains 0.5 kg of r134a at 200 kpa and a specfic volume of 0.07 m3kg. at this point
an oil pipeline was constructed to transport an oil with sg 0.8 for a distance of 10 miles. the country was hilly so
permit a user to input a number between 1 to 10. store this value as the variable numberofresistors. this will be used
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