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A gas initially at 14 bar and 60°C expands to a final pressure of 2.8 bar in an isothermal, internally reversible process. Determine the heat transfer and the work, each in kJ per kg of gas, if the gas is (a) Refrigerant 134a, (b) air as an ideal gas.
Sketch the processes on p-v and T-s coordinates.
Determine the width w of the link BC needed so that the structure with load P = 20 kips has a factor of safety equal to 2.5. Link BC is ½ in thick and has a 85 ksi ultimate strength in tension.
the pressure and temperature ratios across a given portion of a shock wave in air are p2p1 4.5 and t2t1 1.687 where 1
An open wind tunnel with altitude of 1000m has Pin=89,876Pa, Ain=4m^2, T=281.7K, Vin=30m/s and the test section Aout=0.5m^2, Vtest=(X)m/s. R=287J/(Kg*K), density=1.1117kg/m^3 and dynamic viscosity=1.076E-05kg/m-s
what is the net force exerted on a vertical 18c rectangular plate that is 3m tall 5m wide and whose top edge is 2m
the wheel roles without slipping such that at the instant shown it has an angular velocity and angular acceleration.
A TMD is a device consisting of a mass, a spring, and a damper that is attached to a structure in order to reduce the dynamic response of the structure. The frequency of the TMD is tuned to a particular structural frequency so that when that frequ..
a nominal 2 x 8 board 12 ft long is made of msr 2250-1.9e lumber and carries a compressive load of 15.5 kip parrellel
A block weighing 80 N is resting on a plane inclined 20 degree to the horizontal. The coefficient of static friction is 0.5. Determine the friction force on the block. What is the maximum available friction force?
in a mechanical coal-washing process a portion of the inorganic sulfur and ash material in the mined coal can be
A rigid 12L vessel initially contains a mixture of liquid water and vapor at 120C with 15.0 percent quality. The mixture is then heated until its temperature is 155C. Calculate the heat transfer required for this process.
The dam is to be built such that the estimated average flow over its crest will be Q = 3000 m^3/s. Determine the required flow over the crest of a model built to a scale of 1/25
a 960 N.m moment is required to straghten a post. if the capacity of a winch puller is 2400N, determine the minimum value to create the specified moment.
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