The air-release flap on a hot-air balloon is used to
Chapter 5, Problem 127P(choose chapter or problem)
The air-release flap on a hot-air balloon is used to release hot air from the balloon when appropriate. On one hot-air balloon, the air release opening has an area of \(0.5 \mathrm{~m}^{2}\), and the filling opening has an area of \(1 \mathrm{~m}^{2}\). During a two minute adiabatic flight maneuver, hot air enters the balloon at \(100 \mathrm{kPa}\) and \(35^{\circ} \mathrm{C}\) with a velocity of \(2 \mathrm{~m} / \mathrm{s}\); the air in the balloon remains at \(100 \mathrm{kPa}\) and \(35^{\circ} \mathrm{C}\); and air leaves the balloon through the air-release flap at velocity \(1 \mathrm{~m} / \mathrm{s}\). At the start of this maneuver, the volume of the balloon is \(75 \mathrm{~m}^{3}\). Determine the final volume of the balloon and work produced by the air inside the balloon as it expands the balloon skin.
Equation Transcription:
35°C
Text Transcription:
0.5 m^2
1 m^2
100 kPa
35 degree celsius
2 m/s
75 m^3
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