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The Weather Channel reports that it is a hot, muggy day with an air temperature of 90°F, a 10 mph breeze out of the southwest, and bright sunshine with a solar insolation of 400 W/m2. Consider the wall of a metal building over which the prevailing wind blows. The length of the wall in the wind direction is 10 m, and the emissivity is 0.93. Assume that all the solar irradiation is absorbed, that irradiation from the sky is negligible, and that flow is fully turbulent over the wall. Estimate the average wall temperature.
Calcium oxide (CaO) is formed by decomposing limestone (pure CaCO3). In one kiln the reaction goes to 70% completion. What is the composition (by mass) of the solid product (CaO) withdrawn from the kiln? (Hint: there will be two separate product s..
Consider an economy with I consumers and L goods, where, for all i, the endowment vector of consumer i is ei , and the utility function of each consumer i is of the form Iui(xi , ) xn), i=1 where xi is the consumption vector of the ith consumer. Assu..
a cubic tank 1m3 is filled with air at 280k and 100 kpa. it is fitted with a relief valve that will vent at 600 kpa.
a piston cylinder contains air at 350 kpa and 20 c. it is then heated at constant pressure until its volume increases
determine the outlet temperature of air as it leaves the underwater portion of the duct. Also, for an overall fanefficiency of 55 percent, determine the fan power input needed to overcome the flow resistance in this section of the duct.
carbon dioxide at 20 degrees celsius and a pressure of 550 kpa flows through a pipe at 0.04 ns what would be the
A rigid tank contains 10 lbm of air at 30 psia and 65°F. The air is now heated until its pressure doubles. Determine (a) the volume of the tank and (b) the amount of heat transfer.
suppose that your business is operating at the threesigma quality level. if projects have an average improvement rate
A high-performance automotive driveshaft is to be made of a 4-inch outer diameter 6061-T6 Aluminium tube. The shaft is to transmit 500 hp at 3000 rpm and requires a minimum factor of Safety against a shear yield failure of 3.0. Objective:
Describe the operation of a single-phase ac motor. List several applications of this common actuator. Is it possible to realize a three-phase operation using a single-phase ac supply? Explain your answer.
Explain the effect of the following on the rate of diffusion and provide a brief explanation why each of these factors affect the rate of diffusion.
Get information about a car engine .drive the ideal performance using the appropriate cycle and compare to the actual performance.
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