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How fast can a sphere go through air at one atmosphere without the surface of the sphere heating above 400 degrees Fahrenheit?
Wiki User
∙ 13y ago
If we consider that the air has and average molecular mass of 28.9 amu where one amu = 1.66*10^-27kg. And we use the root mean square velocity equation. Were 400 degrees Ferhenheit is about 477.6 degrees Kelvin.
Which gives a velocity of about
1460 miles per hour
Wiki User
∙ 13y ago
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