| Re: Humidity affect on biking speed
In article <40f3f18a$0$21383$4d5ecec7@reader.city-net.com>,
tombates@city-net.com says...
> On a day with a high humidity (everything else being equal) would it take
> more energy to bike a certain distance than on a day with low humidity since
> a person has more resistance from the moisture.
>
> Thanks
Water vapor is *less* dense than air (molecular weight 18, vs Nitrogen
at 28 and Oxygen at 32), so the air resistance would likely be less on a
humid day. This causes big problems for propeller-powered airplanes in
the tropics if they aren't equipped for it.
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