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A 50-kg block of iron casting at 500 K is thrown into a large lake that is at a temperature of 285 K. The iron block eventually reaches thermal equilibrium with the lake water. Assuming an average specific heat of 0.45 kJ/kg · K for the iron, determine (a) the entropy change of the iron block, (b) the entropy change of the lake water, and (c) the entropy generated during this process. the iron, determine (a) the entropy change of the iron block, (b) the entropy change of the lake water.
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The combined action of the three forces on the base at O may be obtained by establishing their resultant through O. Determine the magnitudes of R and the accompanying couple M.
a 3.0 cm a diameter copper sphere having a diameter initially at a uniform temperature of 50degc is suddenly exposed to
In metal injection molding what is the green part made of?, when is the green part made?, how is a brown part created?, and how does the final metal molded part become fully dense with cast metal properties?
a long concrete irrigation channel of rectangular section and base width 3m discharges as a free overfall. the flow is
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Saturated liquid water is kept in a piston-cylinder-weight assembly at 100 kPa. Heat is added from a reservoir at 120 C so that saturated vapor is formed. Estimate the absolute availabilities in kJ/kg of saturated liquid and vapor.
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