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A thin, flat plate that is 0.2 m x 0.2 m on a side with rough top and bottom surfaces is placed in a wind tunnel so that its surfaces are parallel to an atmospheric airstream having a velocity of 30 m/s. The air is at a themperature of T = 20 degrees C while the plate is maintained at T_s = 80 degrees (C). The plate is rotated 45 degrees about its center point, as shown in the schematic. Air flows ocer the top and bottom surfaces of the plate, and measirement of the heat transfer fate is 2000 W. What is the drag force on the plate?
a distillation column with a total condenser and a partial reboiler is separating two feeds. the first feed is a
just after launch from the earth the space-shuttle orbiter is in the 28 x 168-mi orbit shown. at the apogee point a its
saturated liquid water at 25 degrees c is pumped to a pressure of 5 mpa in an isothermal process. the specific work
team at a rate of 5 lbms enters an adiabatic turbine at 800 psia 1000 f and leaves at an actual condition of 10 psia
a steam power plant operates on an ideal reheat-regenerative rankine cycle and has a netnbsppower output of 80 mw.
knowing that at the instant shown assembly a has a velocity of 9in.s and an acceleration of 15 in.s2 both directed
axial flow coolant pump for one lop pressurized nuclear reactor has 75 m head 6m3s flow rate 1440rpm 800 mm diameter
If the chest is completely filled with ice, calculate the time for the ice to completely melt. State your assumptions. The enthalpy of fusion for water is 330 kJ/kg.
a wheel barrow is used to lift a 200 lb load. the length from the wheel axle to the center of the load is 2 ft. the
what is the enthalpy change needed to change 3 kg of liquid water at 0 c to steam at 0.1 mpa and 150 c? b. what is the
a curved nozzle assembly that discharges water to the atmosphere is shown. The nozzle mass is 4.5 kg and its internal volume is 0.002 m^3. The fluid is water. determine the reaction force exerted by the nozzle on the coupling to the inlet pipe.
a piston-cylinder device contains 1 kg of h2o. the water is at 800oc and a pressure of 20 mpa. heat transfer occurs
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