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A piston cylinder device contains nitrogen gas as the system. Initially, the system is at 1.5MPa and 470 °C. It now undergoes an isobaric process until its temperature is 25°C. Determine the final pressure and the heat transfer, in kJ/kg, associated with this process.
air enters at 75 psi 400 f and 100 fts and area at inlet is 20 in2. at outlet 15 psi 500 fts. find m dot and
a long spring with a k50 lbin is cut into three equal parts. the resulting springs are connected to a 386 lb block as
calculate the critical heat flux on a large horizontal surface for the following fluids at 1 atm mercury ethanol and
an 8-kg plunger is released from rest in the position shown and is stopped by two nested springs the constant of the
air in a piston cylinder assembly undergoes a thermodynamic cycle consisting of three internally reversible processes
Describe the methods used. Show a simple schematics sketch of the joining method and briefly describe the process. Compare the advantages and disadvantages of each joining method.
a piston-cylinder assembly initially contains 0.5 m3 of air at 102 kpa and 90oc. the air is now compressed to 0.2m3 in
An electric motor converts electricity to rotating shaft work with an efficiency of 54%. The rotating shaft turns the impeller in the pump which, in turn, increases the pressure of the water (i=1000kg/m3) by 200 kPa. If the motor is consuming 3.5 kW ..
A supply pallet is dropped from an airplane that is climbing at 30 degrees with an indicated air speed of 600ft/s while traveling at an altitude of 12,000 ft. Determine how long it takes for the pallet to reach the ground from it's release point.
a home buyer can afford to spend no more than 1500month on mortgage payments. suppose that the interest rate is 6 that
a rectangular channel 3-m-wide carries 10 m3s at a depth of 2m. is the flow subcritical or supercritical? for the same
air at mass flow rate of 10 kgs at 1 atm 300 k point1 enters an adiabatic compressor and exists at 8 atm 600 k point 2.
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