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One mole of an ideal gas at T = 25 °C is held in a cylinder by a piston at a pressure of 1 x 107 N m-2. The piston pressure is released in three stages,, first to 5 x 106 N m-2, then to 1 x 106 N m-2, and then to 1 x 105 N m-2. Calculate the work done by the gas during these irreversible, isothermal expansions. Compare this result to work done in a quasi-static (reversible), isothermal expansion from 1 x 107 N m-2 to 1 x 105 N m-2 at T = 25 °C.
there are two connected spur gears attached to a fixed board at points a and b. the assumptions of the system are that
Advanced Stress Analysis Assignment
Important information about Pressure Cooker, Steam is leaving a pressure cooker whose operating pressure is 30 psi. It is observed that the amount of liquid in the cooker has decreased by 0.4 gal in 45 minutes after the steady operating conditions..
Evaluate the effect of the water spray on efficiency (net work out divided by heat input) and net power out per kg/s of dry air coming into the turbine.
an hydraulic turbine operates under an available head of 85 m at a flow rate of 0.25 m3s. the electrical power output
a truck is traveling at v0 60mph when the driver applies the brakes to come to a stop. the deceleration of the truck
Estimate the theoretical fracture strength of a brittle material if it is known that fracture occurs by the propagation of an elliptically shaped surface crack of length 0.16 mm and that has a tip radius of curvature of 0.002 mm when a stress of 1..
Determine the total heat transfer and the total work(kj). and show the T-V diagram.
water contained in a closed, rigid tank, initially saturated vapor at 200C, is cooled to 100C. determine the initial and final pressure, each in bar. locate the initial and final states on a sketches of the p-v and T-v digrams.
an air-hockey puck has a mass of 50 g and is 9 cm in diameter. it is placed on an air hockey table at 20 c and the film
the 50 kg wheel is a solid circular disk which rolls on the horizontal plane in a circle of 600mm radius. the wheel
a cylindrical bar of radius 15 mm and length 100 mm is held at both ends. if at 30 degc no axial force exists in the
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