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Why is it easier to swim in sea water th...

Why is it easier to swim in sea water than in river water?

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Sea water is heavier than river water (density of sea water is around `1040(kg)/(m^3)`). Thus the immersed portions of the body of a swimmer experience greater buoyancy in sea water than in river water.
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Knowledge Check

  • It is easier to swim in a sea water than in ordinary water because :

    A
    atmosphere pressure is highest at sea level .
    B
    sea water contains salt .
    C
    density of sea water is higher than that of ordinary water .
    D
    density of sea water is less than that of ordinary water

  • Why is it easier to swim in a sea than a river ?

    A
    Sea water is still while river water is running
    B
    Salinity of sea water is more than that of river water
    C
    Density of sea water is more than that of river
    D
    None of the above

  • Why is it easier to swim in a sea than a river ?

    A
    Sea water is still while river water is running
    B
    Saltnity of sea water is more than that of river water
    C
    Density of sea water is more than that of river
    D
    none of the above

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    (a). A body may sink in one liquid but float on another. Given examples. (b). It is easier to swi in sea water than in a river water. Why ? (c). A hollow ball has an internal diameter of 10 cm and external diameter of 12 cm. it is found that it floats on water. Find the density of the material of the ball (The volume of a sphere varies as the cube of the diameter).

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