Questions from Thermal Fluid Science


Q: The weight of bodies may change somewhat from one location to another

The weight of bodies may change somewhat from one location to another as a result of the variation of the gravitational acceleration g with elevation. Accounting for this variation using the relation...

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Q: A 100-L container is filled with 1 kg of air

A 100-L container is filled with 1 kg of air at a temperature of 27°C. What is the pressure in the container?

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Q: A mass of 1 lbm of argon is maintained at 200 psia

A mass of 1 lbm of argon is maintained at 200 psia and 100°F in a tank. What is the volume of the tank?

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Q: What is the difference between the critical point and the triple point

What is the difference between the critical point and the triple point?

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Q: A 400-L rigid tank contains 5 kg of air at

A 400-L rigid tank contains 5 kg of air at 25°C. Determine the reading on the pressure gage if the atmospheric pressure is 97 kPa.

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Q: The pressure gage on a 2.5-m3 oxygen tank

The pressure gage on a 2.5-m3 oxygen tank reads 500 kPa. Determine the amount of oxygen in the tank if the temperature is 28°C and the atmospheric pressure is 97 kPa.

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Q: A spherical balloon with a diameter of 9 m is filled with

A spherical balloon with a diameter of 9 m is filled with helium at 27°C and 200 kPa. Determine the mole number and the mass of the helium in the balloon.

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Q: Reconsider Prob. 4–72. Using appropriate software, investigate

Reconsider Prob. 4–72. Using appropriate software, investigate the effect of the balloon diameter on the mass of helium contained in the balloon for the pressures of (a) 100 kPa and (b) 200 kPa. Let t...

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Q: A 1-m3 tank containing air at 10°C and

A 1-m3 tank containing air at 10°C and 350 kPa is connected through a valve to another tank containing 3 kg of air at 35°C and 150 kPa. Now the valve is opened, and the entire system is allowed to rea...

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Q: A mass of 10 g of oxygen fill a weighted piston–

A mass of 10 g of oxygen fill a weighted piston–cylinder device at 20 kPa and 100°C. The device is now cooled until the temperature is 0°C. Determine the change of the volume of the device during this...

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