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Air at 20C flows over a very large bank of 2 cm OD tubes that are kept at 100C. the air approaces at an angle of 15 degress off normal to the tubes. the tube array is staggered, with SL= 3.5 CM and ST= 2.8 cm. Find Average h on the first tubes and on the tubes deep in teh array if the air velocity is 4.3 m/s before it enters the array (Average h deep = 118 W/m squared K)
oxygen is flowing through a nominal 2 inch schedule 40 steel pipe pipe at a velocity of 10 fts. the oxygen is at a
steam leaves a power plant steam generator at 3.5 mpa 400degc and enters the turbine at 3.4 mpa 375degc. the isentropic
a small spherical ball is gently released from rest in a cylindrical tank completely filled with glycerine. the ball
assuming that the diameters of 1000 brass plugs taken consecutively from a machine form a normal distribution with
one-fourth kg of a gas contained within a piston-cylinder assembly undergoes a constant pressure process at 5 bar. the
a 3 m x 3 m x 2.4 m room losses heat through the walls at a rate of 520 w. determine the final temperature of the room
how long would it take to use up current reserves? suppose the total resource is five times current reserves; if the use rate continues to grow at 2.6 percent, how long would it take to use up the resource?
a piston-cylinder device contains 0.8 kg of steam at 300degc and 1 mpa. steam is cooled at constant pressure until
Complete the sketch of the obtuse triangle. It must have an area of 1.75 in.2. Prove the geometry by dimensioning the sketch and showing the area calculation. Show only those dimensions needed for the area calculation. Note: each grid unit = .25 i..
a a diesel air-standard cycle has a condition at the beginning of the isentropic compression process defined by t1 300
at a given instant train e has a speed of 20ms and an acceleration of 14ms2 acting in the direction shown 75 degrees to
a stationary tethered balloon contains helium gas an ideal gas here at 0.00degc and 0.0700 mpa at a height of 1000 m.
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