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The sum of the mole fractions for an ideal-gas mixture is equal to 1. Is this also true for a real-gas mixture?
A community has a current population of 15,000. 10 years ago, the population was 12,500 and the community has a declining growth rate with a saturation population of 22,000. The total water consumption for the community at present is 2.25 million gal..
If, on 8/1/2019, 3-year municipal bonds with an AA- rating and a coupon rate of 6.50% (payable semiannually) are selling for $100.00, what would be the fair market value of the 300 Whittier bonds (not including the 8/1/2019 coupon payment)
You are planning a Polaris observation at latitude 42 degrees North when the star is at or near upper culmination. You want to know the error in azimuth that will result from a 1 min timing error. You know that the meridian angle, t, is exactly 0 deg..
Using a reflux ratio of twice the minimum reflux, calculate the minimum number of plates using a total condenser and reboiler and a Murphree plate efficiency of 65%.
An electrodialysis is used to treat a stream of 125 m3/d produced water with a salinity of 13,000 mg/L NaCl before the produced water is discharged to the river with the flow rate of 5 million L/d and salinity of 20 mg/L NaCl
A gas flows along the x axis with a speed of v = 5x m/s and a presure of p = 10x^2 N/m^2, where x is in meters. a) Determine the time rate of change of pressure at the fixed location x = 1.
The Navier Stokes equations in the z-direction. Define what each term in the equation means. Overall, what quantity is being conserved? Under what conditions might you be justified in assuming that non-linear terms are not important?
A step-type escalator as shown is designed to transport 120 persons per minute at a constant speed v=1.5 ft/s. The overall efficiency of the escalator is estimated to be 70%, and a 200% overload is to be allowed. Assuming that the average weight per ..
The rope is 16 m long and the tree limb is 8 m above the man's center of gravity where he holds the rope. Suppose that the man begins at rest right next to the child and backs away with an acceleration of 0.2 m/s^2.
The geometry of the rod assembly is given as a=2.8 m, b=0.950 m, c=1.00 m, and d=0.600 m. Neglect the weight of the rod. The journal bearing supports the rod in such a manner that it is free to rotate in the Z-direction.
a 20 kg block slides along the rough surface for which the coefficient of kinetic friction is 0.2. The block strikes a nonlinear spring with a speed of v=4.5 m/s. The spring is termed "nonlinear" because it has resistance of Fs=ks^2
A copper bar with a rectangular cross section is held withoutstress between rigid supports. Subsequently, the temperatureof the bar is raised 50 C. Determine the stresses on allfaces of the elements A and B
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