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The variable-speed motorized unit is restrained in the horizontal direction by two springs, each of which has a stiffness of 2.1kN/m, Each of the two dashpots has a viscous damping coefficient c = 58N*s/m In what ranges of speeds N can the motor be run for which the magnification factor will not exceed 2?
A 45 W electric mixer is operated for 5 minutes while mixing a 2 kg shake. Assume Csubv=4200 J/kg-K for the liquid. Determine the temperature rise (in degrees C) of the milk shake.
A 4x4 carries an axial compressive force caused by dead, love, and roof live loads. Lumber is No. 1 Douglas Fir-Larch. Cm = 1.0 , Ct = 1.0, Ci = 1.0. The unbraced length of the member is 12 ft.
A vertical bar is known to have dimensions 100" by 1" by 4" priorto application of a load, to have elastic modulus equal to107 psi, and to have a Poisson's ratio equal to 0.3.Suppose the bar is built in at the bottom and a mass of unknownweight is mo..
How much of a reduction in the automobile emission rate would be required to achieve the maximum eight-hour average NAAQS for CO at steady state 9 ppmv ( (10.3 mg/m^3)?
Water ?ows at 6 ft/ s through a pipe 500 ft long with diameter 1 in. The inlet pressure p1= 200 psig, and the exit section is 100 ft ft higher than the inlet.
The house has a 1 m high dirt-floored crawl space. The emission rate of radon into the crawl space is reported to be 0.6 pCi/m2s. An exhaust system was added to provide 1 air exchange per hour (ACH) in the crawl space. The outdoor concentration of..
A gas mixture consists of 5 kg of O2, 8 kg of N2, and 10 kg of CO2. Determine (a) the mass fraction of each component,
A 3 ft deep cut is to be made across an entire 2.5-acre site. The average unit weight of this soil is 118 lb/ft^3, and the average moisture content is 9.6%.
If the weight causes B to be displaced downward 0.025 in., determine the strain in wires DE and BC. Also, if the wires are made of A-36 steel and have a cross-sectional area of 0.002 in^2
Many years ago, well-known architect Frank Lloyd Wright designed a mile-high skyscraper, which has never been built.
Aqueous sodium cyanide wastes at a metal processing industry are to be treated with chlorine and NaOH. Calculate the stoichiometric quantity of CL2 required daily to destroy the cyanide from 5 Kg of NaCN.
Steam flows steadily through an adiabatic turbine. Theinlet conditions are 10 MPa, 450 C and 80 m/s. and the exitconditions are 10 kPa, 92% quality at 50 m/s.
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