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A strip of material 1 inch wide, w, and initially 1/16 in. thick is compressed between flat dies to one half its original height. The die depth, b, is 1/4 inch. Model the material by s = 17+18*epsilon (ksi). Find the stress and the strain in all three dimensions when compressed. Then, find the force on the die, according to the maximum shear stress criterion and according to the distortion energy criterion. Finally, explain the difference between these two results. What was this material?
a stream of refrigerant-134a at 1 mpa and 12 c is mixed with another stream at 1 mpa and 60 c. if the mass flow rate of
the radial component of velocity of water leaving the centrifugal pump sketched in figure is 30 fts. the magnitude of
a cylindrical bar of metal having a diameter of 18.4 mm and a length of 192 mm is deformed elastically in tension with
A layer of water seperates two smooth surfaces a distance of 2r. Derive an experssion for the force needed to pul the two surfaces apart. Consider the bottom surface fixed. What is the force needed to seperate the top surface?
water at 20 mpa and 60 degrees celcius enters a mixing chamber at a rate of 280lbmmin where it is mixed steadily with
a long trough is supported by a continous hinge along its lower edge and by a series of horizontal cables attached to
for a rankine cycle with reheat finda. the inlet pressure at the low pressure turbine if the inlet pressure at the high
a piston - cylinder device initially contains 0.1 m3 of nitrogen gas at 150 kpa and 130 degc. the nitrogen is now
what is the net force exerted on a vertical 18c rectangular plate that is 3m tall 5m wide and whose top edge is 2m
What is the acceleration of the aircraft (in m/s2)? How long does it take the aircraft to reach its take-off speed?
the manometer shown above in problem 1 above contains water and kerosene. with both tubes open to the atmosphere, the free surface elevations differ by H=20mm determine the elevation difference when a pressure of 98.0 Pa is applied to the right.
a rigid insulated tank contains 0.6 kg of air initially at 200 kpa 20degc. the air is stirred by a paddle wheel until
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