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The roof of an industrial building is to be supported by wide-flange beams spaced 4ft on centers across a 20ft span. The roof will be a poured concrete slab, 4in thick. The design live load on the roof is 200lb/ft^2. Specify a suitable wide flange beam that will limit the stress in the beam to 22000 psi.
determine the horsepower input for a motor necessary to lift a 200 kg box at a constant rate of 2 ms. the overall
a packed bed is composed of cubes 0.02 m on a side and the bulk density of the packed bed is 980 kgm3. the density of
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two blocks a and b are initially at 100c and 500c respectively. they are brought together and isolated from the
a vapor initially at 50 psia and 100 f state 1 is contained within a piston- cylinder device. the refrigerant is cooled
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a household freezer operates in a room at 20ordmc. heat must be transferred from the cold space at a rate of 2 kw to
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refrigerant 134a enters an adiabatic compressor as saturated vapor at 200kpa at a rate of 30 kgmin and is composed to a
a pure jet engine propels an aircraft at 250 ms through air at 45 kpa and -13 degc. the inlet diameter of this engine
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