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A certain balloon is constructed of a material such that the pressure inside is related to the volume according to the relation PV^(-2/3)=constant. The balloon contains 2kg of ammonia initially at 0C, 60% quality. The balloon is now heated until the final pressure inside reaches 600 kPa. Considering the ammonia as a system, how much work in kJ, is done during the process?
How do I calculate isentropic efficiency of a steam turbine when I know the inlet and outlet conditions?
a room with 42 kg of dry air has 1 kg of water vapor. if the enthalpy of the water vapor at 31 deg celcius is 3406 kjkg
Gate AB in fig 2 is a one-quarter circle, 5 m wide into the paper, hinged at B and resting on a smooth wall at A. Find the total horizontal force on the surface.. Find the total vertical force on the surface.
assume that all of the unit cells of a piece of aluminum with dimensions 4in x 4in x 0.001in are arranged so that a0 is
an egg can be approximated as a 5.5cm diameter sphere. the egg is initially at a uniform temperature of 8c and is
the system is released from rest in the position shown. the masses of the collar a and the box b are ma 90 kg and mb
Estimate the blood pressure in each branch, assuming that blood vessels behave as rigid tubes, that we have frictionless flow, and that the vessel lies in the horizontal plane. What is the force generated at the branch by the blood? You may approx..
determine the number of discrete frequencies from the minimum to and including the maximum frequency that will appear
you are designing a follower motion using modified trapezoid using scca family with b0.2 c0.5 d0.3. cam interval beta
Refrigerant 134a enters a 28-cm diameter pipe steadily at 200 kPa and 20C with a velocity of 5 m/s. The refrigerant gains heat as it flows through the pipe and leaves the pipe at 180 kPa and 40 C.
Plot the lift and drag forces exerted on an airfoil as a function of velocity. Use velocity values going from 0 to 45 m/s on a log-linear plot (log-scale on the y axis).
a round copper rod sticks through the insulated wall of a tank of hot water and into the air inside the room. the
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