Find the irreversibility in the process per kilogram
Two flows of air both at 200 kPa of equal flow rates mix in an insulated mixing chamber. One flow is at 1500 K and the other is at 300 K. Find the irreversibility in the process per kilogram of air flowing out.
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What are the temperature on the left edge of the wall, the maximum temperature in the wall, and the heat flux q'' in kw/m^2 going through the right side of the plate?
A supply of steam at 100 kPa, 150°C is needed in a hospital for cleaning purposes at a rate of 15 kg/s. A supply of steam at 150 kPa, 250°C is available from a boiler and tap water at 100 kPa, 15°C is also available.
A 10-m uniform beam of weight 100 N is supported by two ropes atthe ends. If a 400-N person sits at 2.0 m from the left end of thebeam, what is the tension in the left rope?
The maximum stress developed in the spring is 150,000 psi. What is the required diameter of the torsional helical spring, the initial angular deformation of the spring and the number of active coils in the spring?
If 1.0 m3 of concrete weighs 4.5 104 N, what is the height of the tallest cylindrical concrete pillar that will not collapse under its own weight? The compression strength of concrete (the maximum pressure that can be exerted on the base of the st
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Calculate the mass of the fluid present, the value of n in the first process and the net work done on or by the fluid in the cycle. Sketch the cycle on the p-V diagram.
Assuming that the astronaut starts from rest, find the final speed of the astronaut after throwing the tank. Answer in units of m/s.
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