Physics, 23.03.2020 18:01 cesarcastellan9
A spherical hot-air balloon is initially filled with air at 120 kPa and 20°C with an initial diameter of 5 m. Air enters this balloon at 120 kPa and 20°C with a velocity of 3 m/s through a 1-m-diameter opening. How many minutes will it take to inflate this balloon to a 16.9-m diameter when the pressure and temperature of the air in the balloon remain the same as the air entering the balloon? The gas constant of air is R = 0.287 kPa·m3/kg·K.
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A spherical hot-air balloon is initially filled with air at 120 kPa and 20°C with an initial diamete...
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