So, I was drinking from my flask. I put ice water inside. (Basically some ice cubes and water)
If the flask is scientifically tested that it drops by 1°c per 16 hours. Wouldn’t the water level rise in the flask as the ice melts? But since it is a vacuum flask, it would hold the water in and prevent it from overflowing. (Rubber cap with tight insulation)
So, if the ice melts and the water level can’t increase wouldn’t the ice cube not melt and remain ice forever?
In: Physics
Water that freezes expands that that is why if float in water, the density is lower.
So ice that melt will decrease in volume so the water will take up less space then the ice did. If you would fill a bottle with liquid water and put it in the freezer so it turns into ice the volume will expand. The result is either that the rubber cap leaks or is force out so water can escape that way or the water example in the bottle and it gets deformed and might crack because the pressure will increase.
A vacuum flask will not have a content 1°c drop per 16 hours the rat the temperature change will depend on the temperature difference between the outside and inside. It is also not a drop in general but a move towards the outside temperature
So that rate might be what happens as a specific inside and outside temperature but at different temperatures is will not be the same.
A floating object displaces an amount of water equal to its own weight. Since water expands when it freezes, one ounce of frozen water has a larger volume than one ounce of liquid water. A completely submerged ice cube weighing one ounce, for example, displaces MORE than one ounce of liquid water. The cube will rise until the volume remaining under the surface displaces only one ounce of water.
If you could remove the ice cube and leave a ‘hole’ in the water where the cube used to float without disturbing the surrounding water, that hole would take exactly one ounce of liquid water to fill. Let the ice cube melt. Since it is now one ounce of liquid water, putting it back into the ‘hole’ will exactly fill it and leave the remaining water undisturbed.
Water level would drop because water expands when it freezes and contracts when it melts. Here the water level dropping pulls a vacuum inside the flask making it not want to melt the ice and thus increase vacuum as fast.
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