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A balloon, which is initially deflated is being filled with air at 25C and 3 bars to a final volume of 1m^3 and 3 bars. Considering the balloon is perfectly insulated and thus process can be considered to be adiabatic and reversible, what is the final temperature of air in the balloon?
A 0.7-lb block rests on top of a 0.5-lb block supported by but not attached to a spring of constant 9 lb/ft. The upper block is suddenly removed. Determine (a) the Maximum velocity reached by the 0.5-lb block, (b) the maximum height reached by the..
Treat the locomotive as a particle and assume that the railroad tracks are rectilinear and horizontal.
air enters the compressor of an air-standard brayton cycle with a volumetric flow rate of 60 m3s at 0.8 bar 280 k. the
when the rubber bands of the sling shot are pulled back each rubber band is stretched 3 in. the natural length and the
a cylinder of radius a is balanced on top of a fixed cylinder of radius b b gt a . if the balance is slightly
the temperatures on the faces of a plane wall 15 cm thick are 375 and 85 degrees celsius. the wall is constructed of a
an equiangular strain gage rosette is mounted on a free and unloaded surface of a part made of steel. when loaded the
a walk-in cooler using a vapor compression refrigeration cycle is configured as shown below. the cycle uses cfc22 or
a heat engine is operating on a carnot cycle and has a thermal efficiency of 75 percent. the waste heat from this
a baggage conveyor is used to unload luggage from an airplane. the 10 kg duffel bag a is sitting on top of the 20 kg
the dimensions of a i beam are thicknesst flange width b10t and height 20t. determine the absolute maximum bending
a 2mm straight stockpiece of steel has a 90dbend. the total length of the unbent piece was 64mm. from the end of the
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