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Why is it easier to swim in sea water than in the river water?
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Answer Posted / abhinav
It is easier to swim in seas than in river as we know U=dgv, the density of sea is greater than density of river due to the presence of salt in sea. U is directly propostional to density, increase in density increases the upthrust. The more the upthrust lesser will be the apparent weight of that body. (Upthrust = Apparent weight - real weight). Less apparent weight makes movement of limbs inside sea easier. Thus, an object can swim easily in seas.
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