Determine the entropy change of the oxygen
Oxygen gas is compressed in a piston-cylinder device from an initial state of 0.8 m3/kg and 25oC to a final state of 0.1 m3/kg and 287oC. Determine the entropy change of the oxygen during this process. Assume constant specific heats.
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Using the productivity rate of 0.013 labor hours per sq. ft. and a productivity factor of 0.95, determine the number of labor hours required to install the ceiling.
A 1400kg wrecking ball hangs from a 20m -long cable. The ball is pulled back until the cable makes an angle of 23.0 with the vertical. By how much has the gravitational potential energy of the ball changed?
An incompressible Newtonian fluid flows steadily between two infinitely long, concentric cylinders of radius ri and ro, for the inner and outer cylinders, respectively. Outer cylinder is fixed and the inner cylinder moves horizontally with a unifo
The weight of all other links is negligible. At the instant shown, determine the torque required from the motor to operate the compressor.
The gas-turbine powered Plymouth ion built in 1960 had a turbine inlet temperature of 926 C, a pressure ratio of 4,and inlet conditions of 15 C, 0.1 MPa. solve using cold and standard-air assumptions:
During the process the temperature of the water changes from 10 degree C to 15 degree C. Compute the change in specific internal energy, specific enthalpy, and specific entropy.
A snowman is made of three spheres of radii R,2R,3R with the largest sphere on the bottom and the smallest sphere on top. Find the center of mass of the snowman.
Steam enters an adiabatic turbine steadily at 7 MPa, 500 degrees C and leaves at 100 kPa. If the mass flow rate is 6.2 kg/s and the isentropic efficiency is 77%, determine the power output of the turbine in megawatts.
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