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A refrigerator that operates on the ideal vapor-compression cycle with refrigerant-134a is to maintain the refrigerated space at -10°C while rejecting heat to the environment at 25°C. Select reasonable pressures for the evaporator and the condenser, and explain why you chose those values.
A force of 100 000 N is applied to a 10 mm x 20 mm rectangular cross-section iron bar in tension. If the iron has a yield strength of 400 MPa and a tensile strength of 480 MPa, determine: whether the bar will plastically deform
As a highway patrol officer, you are patricipating in a speed trap. A car passes your patrol car which you clock at 55 mph. One and a half minutes later, your partner in another patrol car situated two miles away from you, clocks the same car at 5..
Determine the normal capacity of the highway, the capacity of the highway upstream of the work zone, and the capacity within or in the vicinity of the work zone.
A gas solution has the following composition, Oxygen = 35 g Nitrogen = 40 g Neon = 25 g Calculate mass fractions of all components. If you remove Neon, how much you have to remove to reduce mass fraction to 0.1
What is the main difference between the calculation of deflections for reinforced and prestressed concrete beams
Calculate the work done and the heat transfer. Hint: Use the ideal gas law pv = RT to nd the temperature at the end of compression. Take R = 0.287 kJ/kg.K and cv = 0.718 kJ/kg.K.
A 4 X 8-ft solar collector has water circulating through it at the rate of 1.0 gallon per minute while exposed to sunlight with intensity 300 Btu/ft^2-hr.
Groundwater moves through a sandstone porous media and is driven by a gradient of -0.05 directed at an angle of 60 degree counterclockwise from the x-axis.
Create a depreciation schedule showing annual depreciation amounts and end-of-year book values for a $26,000 asset with a 5 year service life, using the MACRS depreciation method.
Two level sections of an east highway (G=0) are to be connected. Currently, the two sections of highway are seperated by a 4000-ft (horizontal distance), 2% grade.
The force of the expanding gases on a 0.02 kg bullet is given by f=f0-f.1*t . Initially stationary at x=0 , the bullet reaches a speed of 1000 kph by the time it exits the gun. f0 = 7000 N and f1=2.9*106 N/s.
The smooth surface that provides the support at C lies in the y-z plane. Determine the reaction components that the ball and socket exert on rod ABC, the tension in cable BD, and force the smooth wall exerts on end C of rod ABC.
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