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Nitrogen gas at 60 kPa and 7° C enters an adiabatic diffuser steadily with a velocity of 275 m/s and leaves at 85 kPa and 27° C. Determine (a) the exit velocity of the nitrogen and (b) the ratio of the inlet to exit area A1/A2.
the emission of an air pollutant is often influenced more by reaction kinetics than by chemical equilibrium. verify
a 3000-lb car accelerates under constant power from 60 mileh to 90 mileh on a 0.25 mile straight level test track.
air enters a compressor at 300 k and 100 kpa at a volumetric flow rate of 4 m3s. the air is compressed such that the
a new alloy used for construction of artificial hops is co20cr10mo. calculate the mpole fractions and mass fractions of
A construction crew lifts approximately 560 lb of material several times during a day from a flatbed truck to a 32 ft rooftop. A block and tackle system with 50 lb of effort force is designed to lift the materials.
consider a flash chamber operating at steady state as shown in the figure below. refrigerant 134a enters the chamber at
providing domestic hot water to a household typically requires 107 kj of energy per year. a typical electric water
determine the average normal stress at the section a-a and the average shear stress at section b-b in member ab. the
a boat is traveling along a circular path having a radius of 20m . determine the magnitude of the boats acceleration if
question 1 entropya in a coal fired thermal power station indicate where the exergy contained in the coal is destroyed.
a rigid tank of volume 2m3 initially contains steam at 3bar 240oc. the tank is connected to a large steam linecarrying
liquid water enters a manifold series of pipes at 1080 psi and 125 degf with a mass flow rate of 3.5 x 10 6 lb hr and
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