Calculate the rate at which entropy is generated in the pipe
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Assume ideal gases with a constant heat capacity of cp = 29.3 J/mol K. Are the output pressures and temperatures are consistent with the second law?
0.5 kg of water, initially at 300 kPa, 200oC, is compressed in a piston-cylinder assembly to 1500 kPa, 210oC. If heat transfer from the water occurs at an average temperature of 205oC and the entropy production is 0.10 kJ/K.
The hose ends with a nozzle of diameter 2.40 cm. A rubber stopper is inserted into the nozzle. The water level in the tank is kept 7.50 m above the nozzle. (a) Calculate the friction force exerted by the nozzle on the stopper.
Suppose that the magnetic field of the Earth were due to a single current moving in a circle of radius 2910 km through the Earth's molten core. The strength of the Earth's magnetic field on the surface near a magnetic pole is about 6.0·10-5
Oxygen enters an insulated 12-cm-diameter pipe with a velocity of 70 m/s. At the pipe entrance, the oxygen is at 240 kPa and 20 C; and, at the exit, it is at 200 kPa and 18 C. Calculate the rate at which entropy is generated in the pipe.
A string of length 1.2m vibrates in 7 loops at a frequency of 70Hz. Show Work! a. What is the wavelength? b. At what speed is the string vibrating.
If 5000 MW of thermal energy are added to the water in the boiler , 3500 MW are rejected in the condenser , and the additional heat losses from the cycle are 500 MW , what is the net power plant ? what is the thermal efficiency of the power plant
What will the Coriolis Force observed on a 600 gram basketball thrown with a horizontal speed of 5m/s? It is thrown between two children on opposite ends. By how much does it miss its mark due to this coriolis force?
A steam turbine operates with 1.6 MPa and 350o C steam at its inlet and saturated vapor at 30o C at its exit. Determine the heat loss rate through the turbine casing when the mass flow rate of the steam is 16 kg/s and its power generation is 9 MW.
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