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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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It is easier to swim in sea water than in a river water because , the sea water contains salt which increases the density of water and also increases its upthrust `[F=m_(o)g=("Volume"xx"density")g]` ,so the body sinks less in it and we swim easily.
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KUMAR PRAKASHAN-MECHANICAL PROPERTIES OF FLUIDS -SECTION -C (Objective Questions) (VSQs)
  1. A container of liquid is free fall without flyout of liquid is this co...

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  2. When two corks , one small and one big are taken into a vessel filled ...

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

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  4. When stirring by spoon is stop in a milk , it become at rest after s...

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  5. Give the dimensional formula of coefficient of viscosity .

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  6. Define Poise .

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  7. Relation between poise and decapoise.

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  8. Hot liquid flow easily than cold liquid .Give reason .

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  9. Why machine parts becomes sticky in winter ?

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  10. Give two uses of Stoke's law.

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  11. Which one of the force does not depend on the velocity - frictional f...

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  12. The flow of water of river at banks is slow than at middle of river ....

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  13. Which falls faster , big rain drops or small rain drops ?

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  14. Why not rain drops do not posses greater velocity than some velocity ?

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  15. Why is dust particles settled down on floor in a closed room ?

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  16. Give an illustration of steady flow.

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  17. Explain Reynolds Number.

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  18. What is the value of Reynolds number for streamline flow ?

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  19. What is the value of Reynolds number for unsteady flow ?

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  20. What is the value of Reynold's number for turbulent flow ?

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