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a) Calculate the average spacing between free-electron energy levels in a cube-shaped crystal of Li that is one centimetre on each edge.
b) At what cube size will the separation between energy levels be larger than the thermal energy available to the electrons at room temperature?
a vessel of cylindrical shape is 50 cm in diameter and 75 cm high. it contains 4 kg of a gas. a manometer attached to
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Saturated steam at 230 degrees F, 20.78 psia and 19.386 ft cubed per pound of mass enters a compressor with an internal energy of 108.26 Btu/lb of mass and is compressed to 80 psia. the mass flow rate is 50 lb mass per hour. Heat loss from the compre..
determine the power produced by a simple sprinkler-like turbine that rotates in a horizontal plane at 500 rpm. the
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