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A rubber duck in a vacuum is still a rubber duck and it still floats (though water would evaporate too quickly in a vacuum, it could float on something else of
by modeless 3y ago
A rubber duck in a vacuum is still a rubber duck and it still floats (though water would evaporate too quickly in a vacuum, it could float on something else of the same density).
- dogprez 3y agoA rubber duck with a vacuum inside (removing the air material) of it is just a piece of rubber with eyes. Assuming OP's point about the rubber not being less dense than water, it would sink, no?
- modeless 3y agoNo. Air is less dense than water; vacuum is even less dense than air. A rubber duck will collapse if you seal it and try to pull a vacuum inside with air outside, but if the rubber duck is in a vacuum then it will have only vacuum inside and it will still float on a liquid the density of water. If you made a duck out of a metal shell you could pull a vacuum inside, like a thermos bottle, and it would float too.
- dogprez 3y agoThe metal shell is ridged though, so the volume maintains the same with the vacuum. A rubber duck collapses with a vacuum inside of it, thus losing the shape of a duck and reducing the volume of the object =). That's why I said it's just a piece of rubber with eyes.
- modeless 3y ago> A rubber duck collapses with a vacuum inside of it Not if there is vacuum outside too. In a vacuum it remains a duck and still floats.