pour some water in a big vessel,take a bottle without a cap and push it upside down straight in to the water.what do to see and why does this happen ?
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Explanation:
If we push the bottle into the big vessel which is filled with water, then we can observe that the water is slowly going into the bottle. The bottle is filled with water, due to air occupies space.
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Explanation:
take a polythene bag and turn it round by keeping it's mouth open.now close the mouth of the polythene bag.explain what you have seen
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