What is the rate of change of the balloons diameter

Reference no: EM13340025

A spherical hot air baloon is initially filled with air at 118 kPa and 18°C and has an initial diameter of 4 m. Air enters the balloon at the same pressure and temperature as before with a velocity of 3.3 m/s through a 116-cm diameter opening.

a) How many minutes will it take to fill the balloon to a 15.2-m diameter, assuming the pressure and temperature of the air in the balloon doesn't change?

b) What is the rate of change of the balloon's diameter when it reaches the inflated diameter?

Reference no: EM13340025

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