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An electrical motor is used to operate a Carnot refrigerator with an interior temperature of 0.00°C. Liquid water at 0.00°C is placed into the refrigerator and transformed to ice at 0.00°C. If the room temperature is 300. K, what mass of ice can be produced in one day by a 0.50-hp motor that is running continuously? Assume that the refrigerator is perfectly insulated and operates at the maximum theoretical efficiency.
Carbon dioxide initially at 50 kPa, 400 K, undergoes a process in a closed system until its pressure and temperatures are 2 MPa and 800 K, respectively. Assuming ideal gas behavior, find the entropy change of the carbon dioxide (Cp = 1.054 kJ/kg.K)
A specimen of aluminium having a rectangular cross section 9.9 mm × 13.0 mm (0.3898 in. × 0.5118 in.) is pulled in tension with 35300 N (7936 lbf) force, producing only elastic deformation. The elastic modulus for aluminium is 69 GPa (or 10 × 10 6..
a bug is on the rimof a disk of diameter 13 in that moves from rest to an angular speed of 70 revmin in 5.2 s. what is
For any precipitation-hardened alloy, like an al-cu alloy, the strengthening of the alloy depends on the size and number of the precipitates. Calculate the cross-sectional area of a single 10-micron (10-5 m) diameter spherical precipitate. Determine ..
The car shown in the figure is accelerated to the right at a uniform rate. What way will the balloon move relative to the car?
a helicopter gas turbine requires an overall compressor p.r. of 101. this is to be obtained using a two-spool layout
two carnot engines operate in a series. engine 2 uses the waste heat from engine 1. engine 1 receives 200kj at a
A 12-cm-diameter pipe, containing water flowing at 200 N/s, is capped by an orifice plate, as in Fig. P3.45. The exit jet is 25 mm in diameter. The pressure in the pipe at section 1 is 800 kPa (gage). Calculate the force F required to hold the ori..
write an appraisal of mathcad including a comparison with mathlab. describe another feature of mathcad, giving examples of how it can be used.
A pure copper sphere of radius 1 cm is dropped into an agitated oil bath that has a uniform temperature of 130C. The initial temperature of copper sphere is 20C.
a pistoncylinder contains water with quality 75 at 200 kpa. slow expansion is performed while there is heat transfer
a what is the total volume of air drawn into the three cylinders each time the engine executes one revolution?b what is
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