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The concentration of silicon in an iron-silicon alloy is 0.55 wt%. What is the concentration in kilograms of silicon per cubic meter of alloy? Assume that the densities for iron and silicon are, respectively, 7.87 and 2.33 g/cm3.
Define your system to be the gas in the cylinder, and calculate the work transferred from the surroundings to the system from this expansion. Note that the pressure will change as the expansion takes place.
How many times more ignition energy is required to achieve ignition of a fuel-air mixture at sea level with T = 298 K than at altitude of 6000 m where pressure P = 47,166 Pa and T = 248 K?
air enters a device operating at steady state at 18 bar and 572 k and leaves at 1.5 bar and 520 k with a volumetric
describe possible methods that can be used to separate materials such as polymers, aluminium alloys and steels from one another.
a steam turbine receives water at 15 mpa 600oc at a rate of 100 kgs shown in figure q4 below. in the middle section 20
if the 1500-lb boom ab the 200-lb cage bcd and the 175-lb man have centers of gravity located at points g1 g2 and g3
a state runs a lottery in which 6 numbers are randomly selected from 40 without replacement. a player chooses 6 numbers
a 0.5-m3 vessel contains 10 kg of refrigerant-134a at -20oc. determine a the pressure b the total internal energy and c
Give two advantages of preheating the water in this way and one disadvantage and give two reasons why the presence of any sulphur in the fuel mix would be undesirable.
A rigid tank contains water vapor at 200 degrees celcius and unknown pressure. When the tank is cooled to 150 degrees celcius, the vapor starts condensing. Estimate the initial pressure in the tank.
a large number of concrete slabs each 0.6 m in length are lined up with a spacing of 0.1nbspmm between them. the
determine the designe power. An output speed of 175 RPMis specified. Determine: a) number of teeth on the small sprocket, b) number of teeth on the large sprocket, c) lubrication type required, d) the required length of chain (in inches) if the ce..
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