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Two kilograms of carbon monoxide in a piston-cylinder assembly, initially at 1 bar and 27C, is heated at constant pressure with no internal irreversibilities to a final temperature of 227C. Employing the ideal gas model, determine the work, the heat transfer, the amounts of energy transfer accompanying work and heat transfer, each in kJ. Let T_0 = 300K, p_0 = 1 bar and ignore the effects of motion and gravity.
one way to decrease the power needed to compress a gas using a compressor is to encompass the compressor in a water
a closed system contains 2 kg of saturated steam at 3 mpa. the steam expands in a reversible process which can be
an apparatus for measuring thermal conductivity employs an electrical heater sand- wiched between two identical samples
two insulated tanks are connected by a valve. one tank initially contains 1.2 ib of air at 240 f 30 psia and the other
dry air at 32degreec flows over a wetted water plate of 0.2 m2 area. the average convection coefficient is h 20 wm2
The diffusivity of copper in a commercial brass alloy is 10^-20 m2/s at 500'C. The activation energy for diffusion of copper in this system is 195 kJ/mol. Calculate the diffusivity at 600'C.
hypothesis testing. think of a problemissue in your job or in life that can be addressed using a hypothesis test.
Characterize the three basic materials (metals, ceramics and polymers) in regarding to modulus of elasticity, strength, ductility and coefficient of thermal expansion.
a viscous liquid density of 1180 kgm3 and dynamic viscosity of 0.0045 n sm2 flows at a volumetric rate of 12.6 mls
an aluminium bottle weighs 10 kgs when empty and has an internal volume of 20 liters. it is filled with 5 kgs of
consider refrigerant r-134a flowing in a smooth horizontal 10-mm-inner-diameter tube of wall thickness 2 mm. the
a system executes a power cycle while receiving 800 kj by heat transfer at a tem-perature of 1600 k and discharging 120
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