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An isolated system consists of a 10-kg copper slab initially at 30°C, and 0.20 kg of saturated water vapor, initially at 130°C. Assuming no volume change, determine the final equilibrium temperature of the isolated system in °C.
a 2.0 cubic meter rigid tank contains a water-vapor mixture at 100 kpa. heat is transfered until the pressure reaches
a large guinea pig weighing 2 kg is riding a skateboard horizontally at a speed of 25 ms. then a force causes the
If the engine exerts a traction force of 1/8 of the weight of the train, determine the speed of the train when it has traveled up the slope a distance of 1.1 . Neglect rolling resistance.
wetting of some metallic surfaces can be inhibited by means of ion implantation of the surface prior to its use thereby
steam enters an extraction turbine in a vapor power plant operating at steady stte at 10 mpa 480 c. 25 of the steam is
a sheet of 0.001 thick bcc iron foil separates a high hydrogen content gas from a low hydrogen content gas at 725
consider entropy balance equation for human engines. humans loose heat at the rate of 80 w from the body which is
water vapor is cooled in a closed rigid tank from 520 c and 100 bar to a final temperature of 270 c. determine the
consider the isothermal expansion of 4.50 mol of an ideal gas at 450 k from an initial pressure of 12.0 bar to a final
it is 30degf outside. the temperature of the outside surface of a building is 33degf. the thickness of the building
a gas may be considered rare?ed that is it can not be studied with theories based on the continuum assumption if it
the density of liquid water at 25 c is 997 kgm3 and the specific gravity of solid water ice at 0 c is 0.98. 100 kg of
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