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  Home > JCE Print > Journal of Chemical Education > Issues > 2005  > February  >
In the Classroom
On the Buoyancy of a Helium-Filled Balloon
John E. Harriman
Department of Chemistry, University of Wisconsin—Madison, Madison, WI 53706
Cover
February 2005
Vol. 82 No. 2
p. 246
Abstract
It is shown by expansion of the exponential in the barometric formula that the forces due to pressure acting on a balloon are of the form (PV/RT)Mg and that results agree with those suggested by Archimedes principle. Einstein's equivalence principal provides an answer to what balloons will do in an accelerated car.
More Information
*  Citation
 Harriman, John E. J. Chem. Educ. 2005 82 246.
*  Keywords
 Analogies / Transfer; Atmospheric Chemistry; First-Year Undergraduate / General; Gases; General Chemistry; Humor / Puzzles / Games; Kinetic-Molecular Theory; Physical Chemistry; Physical Properties
*  History
 Created:
Last Updated:		 January 4, 2005
January 12, 2005
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