why is it easier to swim in the sea than in a well or a lake ??
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It is because sea water contains more amount of salt as compared to river/fresh water as a result its density increases and hence the buoyant force increases which makes it easier to swim in sea water.
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It is easier to swim in sea water than in Lake or river water because we observe more buoyant force in sea water due to its hardness than in river water also because sea water contains more amount of salt as compared to river/fresh water as a result its density increases...
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