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An isolated system consists of a closed copper vessel of mass 0.1 kg, containing 1 kg of liquid water, each initially at 5°C, immersed in 20 kg of liquid water, initially at 20°C. The system is allowed to come to equilibrium. Determine the final temperature in °C, the entropy change for the copper vessel and each of the liquid water masses, and the amount of entropy produced.
a plane wall 15 cm thick has a thermal conductivity given by the relation k 2.0 0.0005t wmk. where t is in kelvin.
an adiabatic capillary tube is used in some refrigeration systems to drop the pressure of the refrigerant from the
A small, high-speed turbine operating on compressed air produces a power output of 0.1 hp. The inlet state is 120 psi, 200°F, and the exit state is 14.7 psi, - 20 F. Assuming the velocities to be low and the process to be adiabatic, find the required..
the magnetic field produced by the solenoid in a magnetic resonance imaging mri system designed for measurements on
a pressure vessel of radius 10.4 in is filled with a gas at a pressure of 525.0 psi gauge. the top of the vessel is
a solid square cross-sectional bar bxb with a yield stress of 250 mpa is subjected to a compressive axial force p 140
Volunteer Pharmaceuticals (VP) wants to set aside money in the R&D fund to seek supplemental drug applications of its two newly developed drugs. Instead of putting away $780 million now, VP plans to set aside $A each year from year 1 through 40. What..
Remember that velocity is a vector quantity so find the magnitude of the average velocity and the angle of average velocity from the horizon
cylinder conditions at the start of compression in an si engine operating at wot on an air-standard otto cycle are 60
r-134a is throttled from 1200kpa and 40oc to 200kpa. it is known that heat of 5kjkg is lost from r-134a to the
a weight attached to a spring of stiffness 525nm has a viscous damping device. when the weight is displaced and
nitrogen at 100c and 600 kpa expands in such a way that it can be approximated by a polytropic process with n 1.2.
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