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The composition of moist air is given on a molar basis to be 78 percent N2, 20 percent O2, and 2 percent water vapor. Determine the mass fractions of the constituents of air.
You are a real estate salesperson working for Good Earth, Realtors, Inc. You receive 50 percent of all commissions received by the firm (net of MLS fees) for which you were either the listing agent or the selling agent.
If the coefficient of static friction between the cord and the fixed peg at B is fs =0.25, determine the minimum weight of the bucket that will prevent the block from sliding down the incline.
vehicles begin to arrive at a toll booth at 850 am with an arrival rate of xt 4.1 .01t with t in min and xt in veh
the coefficient of the restitution for the collision is e = 0.3, and friction is negligible. if the time duration of the collision is 0.025 s, determine the average impact force which is exerted on the 3 kg body.
Biological treatment processes for wastewater can be categorised as dispersed growth and attached growth systems. Discuss the advantages and disadvantages of attached growth systems over dispersed growth systems.
A coal-fired power plant produces a net electrical output of 500 MW. The composition of the coal burned is C= 72 %, H= 6 %, S= 3.5 %, O= 6 %, N= 1 %, and ash= 12 % by weight. It's heating value (HV) is 30200 kJ/kg. The net thermal efficiency is 36..
A household uses 10 therms of natural gas per month in a gas furnace for heating at a cost of $1.00/therm. For an electric heating system the cost of electricity is $0.10/kwh. Compare the cost of the electric heater to deliver the same energy as t..
Figure out the times he was at each of these companies, who else was there at the time and how they might have collaborated. Include the technologies that were in use or being developed.
What point defects are possible for MgO as an impurity in Al2O3. How many Mg2+ ions must be added to form each of these defects.
An adiabatic piston-cylinder device equipped with a spring maintains the pressure inside at at 300kPa when the volume is 0, and 3000kPa when the volume is 5 m3.
A tensile load of 50 000 lb is applied to a metal bar with a 0.6x0.6 in cross section and a gage length of 2 in. Under this load the bar elastically deforms so that the gae length increases to 2.007 in
Problem 1: Design of a simply supported reinforced concrete beam
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