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A mass of 1 kg of air contained in a cylinder at 1.5 MPa, 1000 K, expands in a reversible isothermal process to a volume 10 times larger. Calculate the heat transfer during the process and the change of entropy of the air.
a what is the approximate ductility el of a brass alloy that has a yield strength of 275mpa? what is its tensile
what is the cooling temperature range obtained by thermoelectric refrigeration?
water is pump from a lake to a storage tank at 18m above at a rate of 70 L/s while consuming 20.4 kW of electric power. disregarding any frictional losses in the pipes and any change s in kinetic energy, determine (a) the overall efficiency of the..
argon gas enters an adiabatic compressor under steady flow conditions at 12o kpa and 30 c with a velocity of 20 ms and
a 0.15-m-diameter pulley turns a belt rotating the driveshaft of a power plant pump. the torque applied by the belt on
two persons a and b weighing 141 and 182 lb respectively jump off a floating platform in the same direction with a
a househusband is steaming beef for his family in a pan with a surface area of 23.544 cm2 that is covered with i a 50 g
Consider a mass going through a polytropic process where pressure is directly proportional to volume (n=-1) the process starts with P=0,V=0 and ends with P=600kPa,V=0.01m^3. Find the boundary work done by the mass.
consider the following gas well drilled 2000 meters vertically with a essentially horizontal leg of 200 meters length.
a simple steam power system has a turbine inlet state of 6.0 mpa and 540 0c and an exhaust pressure 0.008 mpa. the
1.a turbine receives 0.1 kgs of hot air at 55 ms velocity at 1.4mpa and 900k. the air leaves at 225ms and 200 kpa and
a single-pass cross flow heat exchanger shown below is utilized to transfer heat from fluid a to fluid b. right after
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