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Module 8. Basic aerodynamics
Which will weigh the least?
•  98 parts of dry air and 2 parts of water vapour.
•  50 parts of dry air and 50 parts of water vapour.
•  35 parts of dry air and 65 parts of water vapour.

satishpandey asking:
•  ??

Community comments: 8
dimky
Posts: 509
04.02.2014 / 21:42
??
satishpandey
Posts: 6
05.02.2014 / 16:42
I can't understand the answer? how come it weighs least?
dimky
Posts: 509
05.02.2014 / 17:35
What in your opinion is heavier: dry air or water vapour?
satishpandey
Posts: 6
05.02.2014 / 17:38
i think dry air ? isn't it as water vapour contains water
satishpandey
Posts: 6
05.02.2014 / 17:41
i m nt sure...enlighten me haha
dimky
Posts: 509
05.02.2014 / 17:45
Yes, dry air is heavier. So why you don't understand the answer?
arcana_force
Posts: 14
05.06.2018 / 22:34
Water vapor weighs less than dry air. Water vapor weighs 5/8 of dry air. Thus more water vapor, the lighter the air is.
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