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Normal air has a density of 1.22 kg/m 3 . Air that has been heated in a hot air balloon has a density of 0.95

Normal air has a density of 1.22 kg/m3. Air that has been heated in a hot air balloon has a density of 0.95 kg/m3. The hot air balloon has a total volume of 3000 m3.

a. What is the mass of air in the balloon? (1 point)

b. What is the buoyant force acting on the balloon? (1 point)

c. If the basket and riders in the balloon have a mass of 400 kg, what is the acceleration of the balloon? (1 point)

d. What is the minimum volume the balloon can have before it goes downward instead of upward? (1 point)

e. As the balloon rises, the lower air pressure causes the air around the balloon to become less dense. How does this affect the buoyancy of the balloon? (1 point)

f. As the balloon rises, the atmospheric pressure decreases, causing the volume of the balloon to increase. How does this affect the buoyancy of the balloon? (1 point)

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