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Air is cooled as it flows through a 20-cm-diameter duct. The inlet conditions are Ma1= 1.2, T01= 350 K, and P01 =240 kPa and the exit Mach number is Ma2= 2.0. Disregarding frictional effects, determine the rate of cooling of air.
A 40 kg load is placed 3 m from a fulcrum. If an effort force is applied at a distance of 2 m, how much force is required to life the load to a horizontal balance? How could you reduce the required effort force? Are there any additional consideration..
Given the following data for a vertical curve of a road; G1=-2.5%, G2=+5.5% and station of PVI=250+50.At station 252+50, the vertical curve must intersect an existing road at elevation 48.48ft. the elevation on the tangent section at station 256+5..
A single source of BOD causes an oxygen sag curve with a minimum downstream DO equal to 6.0 mg/L. If the BOD of the waste is doubled (without increasing the waste flow rate), what would be the new minimum downstream DO
Transportation need to evaluate the time spent in traveling from city A to city B. The distance between the two cities is a variable because the macro developed is to be used for other cities. 50% of travel time is done at a speed of 30 miles an
Carbon dioxide flows in a 75 mm diameter PVC pipe at 0.014 kg/s at a pressure of 345 kN/m^2/s abs and a temperature of 10 degrees C. Calculate the head loss in 500 m of pipe.
Determine the tension in the cable as the box moves between A and C and determine normal and tangential force components the road exerts on the car at this instant.
A projectile is fired into a block of wood that is hanging on the end of a light rigid rod. How you would estimate the speed of the projectile. What might account for the errors in your estimation.
If the clearance is not adequate in this type of case what modification to L would be required to increase the clearance? Discuss possible ramifications of making this modification. (Do not need to do any calculations in part c).
The three hinged arch is composed of segments of a circle. Support points A and D are not at the same level.Determine: (a) the horizontal and vertical components of reaction at A and D.
Benzene is a toxic chemical used in the manufacturing of mechanical chemicals. A manufacturer claims that its exit (effluent) water meets the federal regulation standards with a mean of less than 7980 ppm of benzene.
Break Even Stripping Ratio (BESR), Given an underground total mining cost of $8.85 per tonne, surface mining costs of $2.95 per tonne of ore, and surface mining stripping costs of $1.75 per tonne of waste
In the state of Oklahoma the county roads are designated with a number and a letter. E on roads extending east and west and S on roads extending north and south.Those roads traveling east and west are designated a number and the letter E
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