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A vertical frictionless piston-cylinder device contains nitrogen at 125 kPa. The outside atmospheric pressure is 100kPa. The piston diameter is 25 cm. Use standard gravitational acceleration determine:
(a) The mass of the piston in kg.
(b) The height difference between the two columns of mercury manometer (in cm), connected to the side of the cylinder, measure gas pressure in the cylinder. The density of mercury is 136000 kg/m^3. The density of the nitrogen is negligible compared to the density of mercury.
The tower is held in place by three cables. If the force of each cable acting on the tower is shown, determine the magnitude and coordinate direction angles of the resultant force. Take x = 20 m, y = 15 m
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an adiabatic and reversible steam turbine receives steam at 1 mpa and 300 degrees c. the exit pressure is 100 kpa.
a 50 kg copper block initially at 350 degree c is quenched in a closed rigid insulated tank containing 120 l of liquid
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A spherical buoy, having a diameter of 1.5 m and weighing 8500 N, anchored to the floor of a lake by a cable. Determine the force extorted by the cable, in N. The density of the lake water is 10^3kg^3/m^3 and g = 9.81m/s^2.
consider a house with inside air temperature of 22 degc. one of the walls of the house has three single-pane glass
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