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Gas flows at a steady rate in a 120-mm-diameter pipe that enlarges to a 180-mm-diameter pipe. At a certain section of the 120-mm pipe the density of the gas is 165 kg/m^3 and the velocity is 15 m/s. At a certain section of the 180-mm pipe the velocity is 10 m/s. What must be the density of the gas at that section? If these same data were given for the case of unsteady flow at a certain instant, could the problem be solved? Discuss.
find the maximum allowable force P if the maximum allowable bearing stress on 6 pins holding 2plates together is σ all=10 MPa, and the maximum allowable shear stress is τ all =25 MPa
According to the photon energy formula, tripling the frequencyof the radiation from a monochromatic source will change the energycontent of the individually radiated photons by what factor?
If the peak-hour factor is .90 and all of the drivers are regular users, what is the level of the service of this compound-grade freeway segment?
How would you define the coefficient of permeability? Give typical values of the coefficient for: a) fresh cement pastes; b) hardened cement pastes; c) commonly used aggregates;
If a tractor with 23-hp, a max speed of 3.6 mph in 1st gear and an effieiciency of 92% is operated operated down a 4% slope and the rolling resistance is 80 lb/ton, what is the maximum external pull in each of the 4 gears.
If the forest is considered to be negatively affected at levels exceeding 300 ?g m-3, use your knowledge of atmospheric transport to determine whether the environmentalists' case is justified.
An unconfined, gravel-sand aquifer has a porosity of 0.23, and a hydraulic conductivity of 1000 m/day. Two monitoring wells are 260 m apart, and the difference in their water levels is 0.3 m.
A temporary diversion has been constructed on a highway of +4 percent gradient due to major repairs that are being undertaken on a bridge. The maximum speed allowed on the diversion is 10 mph
According to his will: First give one coin to manager. 1/5th of the remaining to the elder son. Now give one coin to the manager and 1/5th of the remaining to second son and so on.
A conical tube of length 8 m fixed vertically with its smaller end upwards. The velocity head and pressure head at upper ends are 1.27 m and 2.50 m respectively.
The slope of the channel So=.15% and the Manning n=.038. Estimate the depth y2=100m upstream of a section where the flow depth y1=2.2m Using a) the direct integration method and b) the standard step method.
Diesel fuel has an average chemical formula of C12H23 and a density of 6.45 lb/gal. Calculate how many lbs of CO2 are produced per gallon of diesel burned (assume complete combustion).
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