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Calculate the concentration of water vapor in atmospheric air at 80?F and 50 percent relative humidity. Express in units of ppm and μg/m3.
The electronic components of a computer are cooled by air flowing through a fan mounted at the inlet of the electronic enclosure. At steady state, air enters at 18 C, 1 atm. For noise control, the velocity of the entering air cannot exceed 0.9 m/s.
A mixture of 30% CO2, 60% CO and 10% H2 by volume is placed in a container and maintained at 4680 R and 1 atm. Determine the composition of the mixture at equilibrium.
Determine the applied torque required to accelerate a rotor of mass 100 kg and radius of gyration 500 mm from a speed of 50-300 rpm in a time of 12 s. Neglect bearing friction.
What is the molar diffusive flux of O2 through the mem- brane? What are the molar concentrations of O2 on both sides of the membrane (outside the rubber)?
two kg of saturated liquid water at 1 bar is compressed to 25 bar and 100degc in a water pump. determine the change in
An Al2O3 whisker is a small single crystal used to reinforce metal-matrix composites. Given a cylindrical shape, calculate the number of Al atoms and the number of O atoms in a whisker with a diameter of 1 micrometer and a length of 25 micrometers. (..
A 90-kg man and 60-kg woman stand side by side at the same end of of 150-kg boat ready to dive, each with a 5-m/s velocity of the boat after they have both dived, if (a) the women dives first, (b) the man dives first.
feedwater at 4000 kpa is heated at a rate of 6 kgs from 200degc to 245degc in a closed feedwater heater of a
air enters an evaporative cooler at 95 kpa 35 degrees celcius and 30 relative humidity and exits saturated. determine
the acceleration a of a slider block and its displacement s are related by the expression a k s where k is a
ateam at 5 bar 320 c enters a steady state turbine with a volumetric flow rate of 0.65m3s and evpands adiabatically to
a 25kg steel tank having a volume capacity of 250 litres is filled with liquid water at room temperature. what is need
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