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Why is it when you put a large ice cube and a small ice cube in a cup that the large...

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Why is it when you put a large ice cube and a small ice cube in a cup that the large one floats, but the smaller one sinks to the bottom?

I was wondering if this had to do with the mass or density of the ice cubes.

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The bigger cube is floating in the cup because of the water volume dislocated  by the bigger one is larger than the volume dislocated by the little one. This is the Archimede's law in physics. It has nothing to do with ice density which is the same for the both ice cubes.

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