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A process requires a mixture that is 21 percent oxygen, 78 percent nitrogen, and 1 percent argon by volume. All three gases are supplied from separate tanks to an adiabatic, constant-pressure mixing chamber at 200 kPa but at different temperatures. The oxygen enters at 10°C, the nitrogen at 60°C, and the argon at 200°C. Determine the total entropy change for the mixing process per unit mass of mixture.
A gas mixture consists of 5 kg of O2, 8 kg of N2, and 10 kg of CO2.
Consider the rocket on a test stand . The nose of the rocket is fixed. The rocket is of length L, constant EA and constant m, mass per unit length. To investigate longitudinal dynamics, the rocket is modeled using axial elements of equal length.
Two carts with masses of 4.72 kg and 2.84 kg move toward each other on a frictionless track with speeds of 4.86 m/s and 3.97 m/s respectively. The carts stick together after colliding head-on. Find the final speed.
concrete weights 23.5 knm3 and water weights 9790 nm3. coefficient of friction between the dam and foundation is 0.55.
a timber beam 6 in. wide by 12 in. deep is loaded and supported as shown below. the modulus ofnbspelasticity of the
The steel beam ABCD shown is simply supported at A (pin) and supported at B and D by steel cables each having a diameter of 12mm. A force of 20 kN is applied at point C. For steel, let E = 209 GPa.
a vertical 12-cm diameter piston-cylinder device contains an ideal gas at the ambient conditions of 1 bar and 24 degrees C. Initially, the inner face of the piston is 20 cmfrom the base of the cylinder.
A 2-kg block slides on the smooth circular path (Quadrant One of full circle, block moving left to right). If it is released from rest when theta=0 degrees, determine the force it exerts on the path when it arrives at Point A
Essex Company has a price of $55/share today, and you purchase 2 calls with a $68 strike price for $2.75/share. (Each call consists of 100 share options.) In 6 months, when your options are about to expire, you exercise your options. The stock is tra..
Your boss has assigned you the job of designing a rapid-mix tank for the new water treatment plant for the town of Waffle. The design flow rate is 0.050 m^3/s. The average water temperature is 8 degrees celcius.
At what depth will water flow in a 10 m wide rectangular channel, if n=0.01, S=0.0015 and Q=9m^3/s
What is the maximum distance away that the navigation lights can still be seen by an observer standing at the shoreline The observer's eye height is 5'6" and the uppermost navigation light is 168 above the water.
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