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(Thermodynamic Problem). A confined quantity of air in a piston-cylinder assembly undergoes an internally reversible adiabatic compression process from an initial equilibrium state where the temperature is 27 C, the pressure is 1 bar, and the volume is 2L, to a final state where the final volume is 0.2L. Use the variable specific heat capacity model to determine:
a) The mass of air in the system?
b) The temperature of the final state?
c) The pressure of the final state?
d) The work in kJ?
e) Sketch the process in a p-v diagram?
f) Sketch the process in a T-s diagram?
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an airplane flies a straight course due east from city m to city n 644km away. the plane has an airspeed of 290 kmh.
Calculate the elastic torsional shear stress in the vertical shaft. (Since this stress far exceeds any possible torsional elastic strength, a shear pin or slipping clutch would be used to protect the shaft and associated costly parts.)
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the angle that the resulting force exerted by beam BC on the link will form with the vertical.
The drag coefficient for the parachute which may be treated as hemispherical is 1-3 and mass density of air is 1-216 kg/m .
determine the largest value of
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An inventor claims to have developed a device that executes a power cycle while operating between reservoirs at 500 and 300 K that has a thermal efficiency of (a) 45%, (b) 40%, (c) 35%. Evaluate the claim for each case.
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