The lift of a balloon is_________________?
Correct answer: B. Due to the weight of the atmospheric air, that it displaces
- A. Increased, as it rises to a higher altitude
- B. Due to the weight of the atmospheric air, that it displaces
- C. Not dependent on the temperature of the atmosphere
- D. None of these
Explanation
A balloon is lifted by buoyancy, which equals the weight of the atmospheric air displaced by it. Its net lift is this buoyant force minus the weight of the balloon and its contents.
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