Tuesday, April 27, 2010

Do water bubbles move faster though oil when heated or cooled?

If it's a matter of how fast they will move (rather than whether they'll sink or rise) then they should move faster as the temperature rises because the viscosity of the oil will decrease.Do water bubbles move faster though oil when heated or cooled?
Depends which one is heated relative to the other. If the water is sufficiently heated, it will rise. If the oil is sufficiently heated, the water will sink. There will be a particular temperature where both might have equal density (or not, the water might boil before that happens).

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