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Air contained in a rigid, insulated tank fitted with a paddle wheel, initially at 4 bar, 40oC and volume of 0.2 m^3, is stirred until its temperature is 500 K. Assuming the ideal gas model for the air, determine the amount of entropy produced, in kJ/K. Assume variable specific heats (data from Table A-22).
A living plant leaf is an open system that exchanges energy (sunlight and thermal flows) + matter (O2, CO2, water vapor, etc.) with the surroundings (the exterior). Even with irreversible processes (energy dissipation) we find that the net entropy ch..
a cylinderpiston arrangement contains water at 105 c 85quality with a volume of 1l. the system is heated causing the
Under what circumstances three-way control valves would be used rather than two-way control valves, despite the higher expense of three-way valves?
Calculate the polar moment of inertia of an assembly and using the result to predict the periodic time of a trifilar suspension of the assembly.
a 1200-kg automobile is moving at a speed of 90kmh when the brakes are fully applied causing all four wheels to skid.
a rigid container is separated into 2 compartments by a very thin solid membrane. one side initially holds 2 m3 of air
air at 1 atm and 35c flow across a 5 cm diameter cylinder at velocity 50 ms . the cylinder surface is maintained at
Air flows steadily through a compressor at a rate of 1.2 kg/s. The air enters the compressor at 950 kPa and 27 degrees Celsius and exits at 2.67 MPa and 127 degrees Celsius. If heat is lost to the environment at a constant temperature of 300K, determ..
What is the dimension of the Configuration Space of the mobile manipulator shown in fig. 2, where a PUMA robot (6R) is sited on top of a mobile base which can rotate and move along X, Y directions?
a 12-in. length of aluminum tubing with properties of e 10.4 times 106 psi and alpha 12 times 10 -6 per degree
Determine a symbolic expression for the total thermal resistance of wall, including inside and outside convection effects for prescribed conditions.
The crystal structure of iron is BCC at temperatures below 912°C and FCC above 912°C. Calculate the weight of one unit cell of iron (a) below 912°C; (b) above 912°C.
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