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An insulated rigid tank contains 5 kg of helium gas at 440 kPa and 31C. A valve is now opened, and helium is allowed to escape until the pressure inside drops to 200 kPa. Assuming the helium remaining inside the tank has undergone a reversible, adiabatic process; determine the final mass of the tank.
An air bubble rises from the bottom of a well where the temperature is 25°C, to the surface where the temperature is 27°C. Find the percent increase in the volume of the bubble if the depth of the well is 5 m. Atmospheric pressure is 101,528 Pasca..
an open feedwater heater operates steadily with 30 kghr of liquid water entering one inlet at 40 degcnbspand 700 kpa.
what volume must be provided in a methane tank to hold 10kg of methane at 1500 kpa and 30 degrees celsius? if the
nylon strips are fused to glass plates. when the assembly is moderately heated the nylon will become soft while the
consider 5 kg of air initially at 101.3 kpa and 38 c. heat is transferred to the air until the temperature reaches 260
Consider two actual power plants operating with solar energy. Energy is supplied to one plant from a solar pond at 80°C and to the other from concentrating collectors that raise the water temperature to 600°C. Which of these power plants will have a ..
water is the working fluid in an ideal rankine cycle. saturated vapor enters the turbine at 18 mpa. the condenser
At one section in an air distribution system, air at 14.7 psi and 100degree F has a velocity of 1200 ft/min a and the duct is 12 in x12 in square. At another section the duct is round with a diameter of 18 inches and the velocity is 900 ft/min. Calcu..
a six-cylinder four-stroke spark-ignition engine operating on the ideal otto cycle takes in air at 14 psia and
2 kg of air initially at 5 bar 350 k and 4 kg of carbon monoxide initially at 2 bar 450 k are confined to opposite
Superheated steam at 400°C and saturated water with a quality of 40% enter a mixing chamber at a pressure of 100 kPa. What is the required ratio of mass flow rate of superheated steam to mass flow rater of saturated water if at the exit to the mixing..
large cylindrical bales of hay used to feed livestock in the winter months are d2m in diameter and are stored
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