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A completely sealed elastic balloon contains a gas of unknown type where the initial volume and pressure are 0.7 m3 and 120 kPa, respectively. A process occurs causing the balloon to expand according to the polytropic relationship: Eq. 1) PV^(1.8)=constant. It is known that the total boundary work during the process is 40 kJ out of the system. Based on the given information determine the final pressure and volume (kPa, m3 ).
A flat bar as shown in the figure below is subjected to an axial load F equal to 500 kn. Assuming that the stress in the bar is limited to 200 n/mm^2 determine the thickness of the bar. All dimensions are in mm
a truck travels on rails round a curve of 100m radius at a speed of 90kmh the truck has a total mass o 4ton and its
several geothermal power plants are in operation in the united states and more are being built since the heat source of
a flat-plate collector 4m2 in area is tested during the night to measure the overall heat loss coefficient. water at
Water flows downward through a vertical smooth pipe (i.e., roughness = 0). When the flow rate is 0.5 ft3/s, there is no pressure change along the length of the pipe. What is the pipe diameter?
a roller coaster starts from rest at a rolls down the track to b describes a circular loop of 40-ft diameter and moves
Calculate the depth h below the surface to the top of the line of floats. Also find the angle e made by the line of floats with the horizontal at A - Determine the force T which must be applied to cause the cable configuration
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air enters an adiabatic nozzle steadily at 300 kpa 200degcand 28 ms and leaves at 100 kpa and 168 ms. the inlet area of
two channels are welded to a rolled w section as shown. determine the moments of inertia and the radii of the gyration
Calculate the surface area available inside the heat exchanger.
a smaller power plant produces steam at 3 mpa 600 c in the boiler. it keeps the condenser at 45 c by transfer of 10 mw
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