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A thermodynamic system undergoes a cycle composed of a series of three processes for Q1 = 10 kJ, Q2 = 30 kJ, Q3 = -5 kJ. For the 1st process, ΔE = 20 kJ, and for the 3rd process ΔE = -20 kJ. What is the work in the 2nd process and the net worth output of the cycle.
you are designing a remote-area power supply based on a miniature wind turbine that is 20 efficient. meteorological
find the stresses in a point of a rod that is fixed to a wall and have a load in the edge or better known as a cantilever.
assuming that steam can be treated as an ideal gas what would the specific volume of steam be at 600deg f and 120 psia
steam at 1000 f and 1200 psia enters a turbine. the turbine exhausts into a condenser at 4 psia and is 85 efficientb
an expander receives 1 lbms air at 300 psia 540 r with an exit state of 60 psia 540 r. assume the process is reversible
a painter is standing on a work platform that is 27 feet above ground level. for fall protection the workers safety
a machine part of mass 1.95 kg vibrates in a viscous medium. determine the damping coefficient when a harmonic exciting
A paper clip is made of wire 0.7 mm in diameter. If the original material from which the wire is made is a rod 25 mm in diameter, calculate the longitudinal engineering strain and true strain that the wire has undergone during processing.
If the minimum attractive rate of return is20% per year, determine the one machine that should be selected on the basis of a rate of return analysis.
a rigid tank initially evacuated develops a small hole and air slowly leaks in from the surroundings at a mass flow
a tank has a stirrer that delivers 200 kj of work on 100 kilograms of water at 45 degrees celcus. assume all of the
water at a rate of 45500 kghr is heated from 80 c to 150c in a shell-and-tube heat exchanger haveing two passes and
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