Ball and feather in air/vacuum : Différence entre versions
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Version du 9 juin 2014 à 14:17
PIRA index: 1C20.10
Description
A feather falls more slowly than a ball down a tube due to air resistance. When the tube is evacuated, both the feather and ball fall with equal speed.
Equipment
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Instructions
Keywords
ball, drop, feather, vacuum
Images & Movies
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