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24 November, 18:41

Hot air is less dense than cool air, so hot air will rise above cool air. Increasing the air temperature inside a

hot air balloon makes it lighter than the surrounding air, so the balloon can lift up. The density of hot air is

about 0.25 kg/mº less than that of cool air, which means a cubic meter of hot air can lift about 0.25 kg.

What is the minimum volume of hot air needed to lift a hot air balloon carrying 500 kg?

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Answers (1)
  1. 24 November, 19:41
    0
    2000 cubic meters of hot air

    Explanation:

    Since one cubic meter of hot air can lift. 25 kg/m and you want 500 kg, you take 500 and multiply it by 100/25 or 4. Which gives you 2000 cubic meters or hot air.
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