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We want a Cu-30% Zn brass plate originally 1.2-in. thick to have a yield strength greater than 50,000 psi and a % elongation of at least 10%. What range of final thicknesses must be obtained?
Neglect fringing at the air gaps and any leakage fields. N = 1,000 turns, i = 0.2 A, lg1 = 0.02 cm, and lg2 = 0.04 cm. Assume the reluctance of the magnetic core to be negligible.
A fuel gas containing methane and ethane is burned with air in furnace, producing a stack gas at 300C and 105kPa (absolute). The stack gas contains C02 at a partial pressure of 80 mm Hg and no CO,O2, methane or ethane. Calculate the mole fraction of ..
Fifteen kilogram of polychloroprene is vulcanized with 5.2 kg sulfur. What fraction of the possible crosslink sites is bonded to sulfur crosslinks, assuming that, on the average, 5.5 sulfur atoms participate in each crosslink?
The shower head is connected to a pipe with radius 0.80 cm. If the speed of water in the pipe is 3.0 m/s, what is its speed as it exits the shower-head openings?
The cone frustum in the figure contains incompressible liquid to depth h. A solid piston of diameter d penetrates the surface at velocity V. Derive an analytic expression for the rate of rise dh/dt of the liquid surface.
Water at 30 degrees C flows through a horizontal pipe (1 inch inside diameter), in which the pressure drop is to be limited to 0.015 lbf/ft^2 per foot of length. This low pressure per foot is imposed by the excessively long line involved. Calculate t..
carbon monoxide and water vapor react to form carbon dioxide and hydrogen. water at 25c is fed to the reactor 50 in
A Carnot heat pump is to be used for heating house in winter. The house temperature is set at 25oC. One day the outdoor temperature is 2oC. The house is estimated to lose heat at a rate 55000kJ/h (which equal to Qout of the heat pump).
an electric motor of total weight 3330 pounds is mounted on a simply supported beam with an overhang as shown
Compute the fugacities of ethane and n-butane in an equimolar mixture at 373.15K at 1, 10, and 15 bar total pressure assuming that the Lewis-Randall rule is correct.
sea water specific gravity 1.03 leaks into the diesel fuel specifc gravity 0.81 tanks of a ship. diesel fuel and
a 0.018 cubic meter rigid tank is filled with saturated liquid water at 120c. a valve is opened until half of the mass
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