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When the outside temperature is -10°C, a residential heat pump must provide 3.5 x 106 kJ per day to a dwelling to maintain its temperature at 20°C. If electricity costs 8 cents per kWh, determine the minimum theoretical operating cost for each day of operation.
Centrifugal pump draws water (r=62.4 lbm/ft^3) at a rate of 1200 gpm, and 70 degrees F (Volute Pressure =.3631 psia) from a reservoir through a 4 in diameter pipe and delivers it to a 2 in diameter discharge pipe. The pump is located 10 ft above the ..
a cord is wound in the slot of cylinder a. mass b moves downward with a velocity of 6 m. assume no slipping of the
a packed bed is composed of crushed rock with a density of 175 lbmft3nbspof such anbspsize and shape that the average
Explain any anomalies - differences from theory or what you thought should happen. Is a linear approximation sufficient to describe and predict the relationship between load and output voltage?
the engine of an automobile supplies 180 hp at 2500 rpm to the drive shaft. if the maximum shearing stress in the drive
Air flows isentropic ally at the rate of 0.5 kg/s through a supersonic convergent-divergent nozzle. At the inlet, the pressure is 680 kPa. the temperature 295 K. and the area is 6.5cm^2. If the exit area is 13 cm*2,
the yield stress of a tension specimen machined from a 0.5 m wide by 0.6 cm thick copper sheet is 145 mpa. the sheet is
the uniform slender has a mass of 15 kg. determine the horizontal and vertical components of reaction on pin o and the
Sketch the T-s diagram for the cycle (put labels and appropriate information)
the end of a large tubular workpart is to be faced on a nc vertical boring mill. the part has an outside diameter 45.0
a gas turbine power plant with regeneration delivers 80.000 hp. the lowest pressure in the cycle in 14.7 psia and the
air in a cylinder is compressed reversibly and isothermally from 95 kpa 25 o c to 290 kpa. the initial volume is 0.162
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