Determine the actual cop of the device
An actual refrigerator absorbs 500 kJ of heat from a sink at 250 K and reject 660 kJ of heat to environment at 300 K. T0 = 300 K. the heat transfer processes are reversible. Determine the actual COP of the device.
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If two identical satellites or the Earth in circular orbits collide head on in a perfectly inelasctic collision, what would happen to the debris? Explain Why!! (If you can add formulas proving the explanation right)
If chilled air enters a 15m long duct at 70C, what is the exit temperature and the rate of heat gain? Properties of the chilled air may be evaluated at an assumed average temperature of 300K.
Estimate the maximum magnetic field you might experience walking under such a power line, and compare to the Earth's field.
Find the mean, variance and standard deviation for the distribution.
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Find the percentage of women meeting the height requirement. are too many women being denied the opportunity to join this branch of the millitary because they are too short or too tall
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