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Make a simple sketch and determine the mass or sea-level weight of a rocket motor case that is made of alloy steel and is cylindrical with hemispherical ends. State any assumptions you make about the method of attachment of the nozzle assembly and the igniter at the forward end.
A man comes home on a summer day and finds that his house is at 35oC. He turns on the air conditioner. In 30 minutes the entire house is at 22oC. If the COP of the air conditioner is 2.8, calculate the powerthat must be supplied to it. Assume the..
Show that a first order reaction among M components with real eigenvalues of the coefficient matrix of the induced kinetic differential equation is such that none of the concentrations can have more than M- 2 strict local extrema. Give sufficient ..
Estimate relative errors in the calculation of free carriers concentration when the Maxwell-Boltzman n statistics is applied for semiconductors with Ferm i energy wi thin the energy gap, if the Fenni level is 3kbT, 2k1,T, k,,T away from the ban..
The speed of the rotor rotating magnetic field with respect to the stator rotating magnetic field in r/min.
Discuss the properties of a ‘suitable' matrix in terms of what may be appropriate for maintaining the viability of these cells. What further information would you request from the cell biologists in order to make suitable judgments about the natur..
Design a decanter for this duty, for a feed rate of 3500 kg/h. Concentrate on the separation of the water and aniline. The densities of water-aniline solutions are given in Appendix F, Problem F.8, available in the online material at booksite.Else..
The formation of ice during colder weather helps temper the seasonal transition to winter. This is mainly because
Describe the advantages and disadvantages of using taxes and bounties to regulate negative externalities.
The column packing was initially dry and had a mass of 3.40 kg. Following 5.0 hours of operation, the pellets are reweighed and found to have a mass of 3.52 kg. Calculate the molar flow rate (mol/h) of the feed gas and the mole fraction of water v..
Suppose that instead of cutting the sphere as in Figure 7.35a, the connections are made as in Figure 7.35b. Show that the resistance of the sphere cannot be calculated exactly and comment on the physical meaning of this result.
A thermocouple enclosed in a 3.2mm stainless steel sheath (e = 0.6) is inserted horizontally into a duct to measure the air temperature inside. The walls of the duct are at 650o C, and the true air temperature is 560o C. What temperature will be in..
A liquid solution of LiCl in water at 298.15 K (25°C) contains 1 mol of LiCl and 7 mol of water. If 1 mol of LiCl.3H20(s) is dissolved isothermally in this solution, what is the heat effect?
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