Physics, 22.10.2019 22:50 isabelzavalalopez28
Aspherical 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 17-m diameter when the pressure and temperature of the air in the balloon remain the same as the air entering the balloon?
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