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A carnot engine operating on air accepts 50 kj/kg of heat and rejects 20 kJ/kg. Calculate the high and low reservoir temperatures if the maximum specific volume is 10 m^3/kg and the pressure after the isothermal expansion is 200 kPa.
a 3000-lb car accelerates under constant power from 60 mileh to 90 mileh on a 0.25 mile straight level test track.
a 1-m3 rigid tank initially contains air at 150 kpa 300 k. the tank is connected through a valve to a supply line at
three pulleys are joined by belts as shown. pulley b is a single pulley with two groves for the belts. specs for the
an automobile having a mass of 2 mg travels up a 7 degree slope at a constant speed of v100 kmh. if mechanical friction
kic for the aluminum alloy used in making a structure is 45mpam0.5. if the structure contains a crack 2.5mm long what
the disk is horizontal and turns so that d thetadt ct about the vertical. forces cause a marble to move in a slot
why does turbulent flow distribution adhere more closely to the idealization of one dimensional flow than laminar flow?
hot gas inside an internal combustion engine of a car expands in a reversible manner during the expansion stroke to
a 2-kw iron is left on the ironing board with its base exposed to the air at 25 degc. if the surface temperature is 500
the beam ab is pin supported at a and supported by a cable BC. determine the resultant internal loadings acting on the cross section at points d and e.
What are the forces on the pinion,gear,and shafts?
blocks a and b weigh 25 lb and 10 lb respectively and they are both at a height 6 ft above the ground when the system
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