Physics for Scientists and Engineers: Foundations and Connections
1st Edition
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Katz, Debora M.
Chapter20: Kinetic Theory Of Gases
Section: Chapter Questions
Problem 65PQ
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A very thin layer of oil floats on top of water. A drop of dye is placed at the center of the oil. The dye diffuses through the oil in all directions equally with a diffusion constant D0. Since the layer of oil is thin, we can assume the diffusion is two-dimensional. After a time T0 has passed, the dye has diffused a distance of 5 mm. If the dye had a diffusion constant of D0/3 what distance would the dye have diffused after a time T0/4? Give your answer in units of mm. (Round your answer to two decimal places.)
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