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physics help 2 please!

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The air inside a hot air balloon has an average temperature of 84.3°C. The outside air has a temperature of 15.3°C. What is the ratio of the density of air in the balloon to the density of air in the surrounding atmosphere?
inside / outside = ??

  • physics help 2 please! - ,

    assuming pressure remained constant, if absolute temp doubled, volume would double, and density would be halved, right?

    so that sounds like density is in an inverse relation to abs temp.

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