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1. A certain nozzle expands a gas under isentropic conditions. Its chamber or nozzle entry velocity equals 90 m/sec, its final velocity 1500 m/sec. What is the change in enthalpy of the gas? What percentage of error is introduced if the initial velocity is neglected?
2. Nitrogen at 500? C (k = 1.38, molecular mass is 28.00) flows at a Mach number of 2.73. What are its actual and its acoustic velocity?
Emergent behavior is present in normal cellular and pathologic processes. How does emergent behavior lead to disease?
Estimate the feed flow rates of glycine and guaiacol that would be needed to produce 100 kg/day of the API.
Van Laar equation to calculate activity coefficients, How do I use the Van Laar equation to calculate an activity coefficient for an equilibrium ethanol/water binary system with mole fractions of ethanol in liquid of
In automatically regulated canals, the controlled variables are the water levels, the manipulated variables are the gate positions, and the fundamental perturbation variables are the unknown off take discharges.4 Draw a block diagram of the contro..
Your boss has asked you to recommend a value for the vapor, liquid ratio V/L. What is your recommendation?
One type of commercial smoke detector contains a minute amount of radioactive americium-241 (241Am), which decays by -particle production. The particles ionize molecules in the air, allowing it to conduct an electric current. When smoke particle..
If nitrogen at 150o C flows past one section of the tube at a velocity of 2.5 m s-1, what is its temperature at another section where its velocity is 50 m s-1? Let CP = (7/2)R.[148.80 C]
She wishes to calculate a project's PW with estimated costs of $35,000 now and $7000 per year for 5 years beginning 1 year from now with increases of 10 % per year thereafter for the next 8 years. Use a real interest rate of 12% per year to make t..
The oil is burned with 20.0% excess air, based on complete combustion of the carbon to CO2, the hydrogen to H2O, and the sulfur to SO2. The oil is burned completely, but 8% of the carbon forms CO. Calculate the molar composition of the stack gas.
Consider an engine that operates at a low temperature of 25C and a higher temperature of 432C. Would it be possible to have an efficiency of 65% ?
The March 1979 accident at the Three Mile Island nuclear plant occurred due to a series of operator errors and equipment failures, which reduced the flow of cooling water to the reactor core. As a result, the water began to boil and the core reached ..
Consult your reference library and find another explanation of hole versus electron flow. Using both descriptions, describe in your own words the process of hole conduction.
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