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A closed system consists of an ideal gas with constant specific heats that remain constant. The gas undergoes a process in which the temperature increases from T1 to T2. Show that the Entropy change is greater if the change of state occurs at constant pressure than if it occurs at constant volume. Sketch the process on P-v and T-s diagrams.
a block of mass 100 kg is sliding across a rough flat surface with coefficient of friction mu 0.6 between the block and
methane at 77 f 1 atm enters an insulated reactor operating at steady state and burns with the theoretical amount of
Three lb of water is contained in a piston–cylinder assembly, initially occupying a volume V1 5 30 ft3 at T1 5 300°F. The water undergoes two processes in series: Constant-temperature compression to V2 5 11.19 ft3, during which there is an energy tra..
two kilograms of water fills a 0.1 m3 rigid tank the volume will not change at an initial pressure of 2mpa. the
a refrigeration cycle having a coefficient of performance of 3.0 maintains a computer laboratory of 18 c on a day when
Determine the forces in members BC and FG of the loaded symmetrical truss. Show that this calculation can be accomplished by using one section and two equations, each of which contains only one of the two unknowns.
a pipe in a manufacturing plant is transporting superheated vapor at a mass flow rate of 0.3 kgs. the pipe is 10 m long
find densities, enthalpies and efficiency for gas turbine power cycle with the following conditions.
A solid cylinder with a radius of 5.0 cm and a length of 10 cm is cut in half lengthwise. What is the surface area of one of the two resulting objects?
a 10m height chimney has a 2.0m x 2.0m square cross section. the wind blows horizontally in a direction which is
the power output of an adiabatic steam turbine is 5.5 mw. at the inlet p 2.0 mpa and t 435 degc. the steam enters the
a curved nozzle assembly that discharges to the atmosphere is shown. the nozzle mass is 4.5 kg and its internal volume
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