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An ideal gas, with temperature independent Cp=(7/2)R, at 15c and having an initial volume of 60m^3, is heated at constant pressure (P=0.1013 MPa) to 30c by transfer of heat from a reservoir at 50c. Calculate delS(gas), delS(heat reservoir), delS(universe). What is the irreversible feature of this process?
a long power transmission cable is buried at a depth ground-to-cable-centerline distance of 2 m. the cable is encased
For the preliminary design a power of 0.5kW/m^3 volume is to be used. Calculate the dimensions of the agitation system, rpm, and kW power.
a cold-air standard diesel cycle has a compression ratio of 16 and begins compressing air isentropically from an
three horizontal forces are applied as shown to a vertical cast-iron arm. determine the resultant of the forces and the
a 10 cm long circular pin kfin20 wmtimesk of 12-mm dia removes 53watts of heat from a hot base when the average
to conserve water and energy a flow reducer is installed in the shower head shown here. if the pressure at point 1
a cylinder of radius a is balanced on top of a fixed cylinder of radius b b gt a . if the balance is slightly
a sample of silty clay has a volume of 14.88cm3 a total mass of 28.81 g a dry mass of 24.83 g and a specific gravity of
consider oxygen at 100 bar and specific volume of 0.08.a calculate the temperature t using the van der waals equation
a 10-l radiator filled with superheated water vapor at 200 kpa and 300 degc with both inlet and exit valves closed. the
an ideal gas contained in s piston-cylinder device undergoes and isothermal compression process which begins with an
a 3-lb collar can slide on a horizontal rod which is free to rotate about a vertical shaft. the collar is intially held
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