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Oxygen (O2) gas within a piston-cylinder assembly undergoes an expansion from a volume V1 = 0.01 m^3 to a volume V2 = 0.03 m^3. The relationship between pressure and volume during the process is p = AV^-1 + B, where A = 0.06 bar * m^3 and B = 3.0 bar. For the O2, determine (a) the initial and final pressures, each in bar, and (b) the work, in kJ.
a 3000 kg car a and 15000 kg freight car b are moving towards each other with velocities 20 kmh and 10 kmh
a spring 75 nm has an equilibrium length of 1.00 m. the spring is compressed to a length of 0.50m and a mass of 2.1kg
an electric hot plate is maintaned at a temperature of 350 and is used to keep the solution just boiling at 95. the
air enters the compressor of a regenerative gas-turbine engine at 300 k and 100 kpa where it is compressed to 800 kpa
a brass rod 100 mm long and 5 mm in diameter extends horizontally from a casting at 200 degree c. the rod is in an air
xerted on the shaft shown in the figure, which rotates at 1150 rev/min and supports a 10-kip bending force. Use a 1095 HR steel. Specify a diameter d using a design factor of nd = 1.6 for a life of 3 min. The surfaces are machined.
a 25-hp 240-v 77.8-a shunt motor has an armature resstence of 0.083 ohms and a field-circuit resistance of 125 ohms.
oxygen at a pressure temperature and volume of 40 psia 800f and 20 ft3 undergoes a constant vol-ume process to a
a post-hole digger is mouted on a tractor. the power unit of the machine applies a torque of 800 lb.in to the auger and
the field-circuit resistance and armature-circuit resistance of a 10-hp 115-v motor are 90 ohms and 0.08 ohms
The total force Fa + Fb exerted on the shelter is in the direction parallel to the line L and it's magnitude is 400 lb. Graphically determine the magnitudes of Fa and Fb.
at steady state a heat pump maintains the interior of a house at 77f by transferring to it 30 kw of heat from the
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