Q5 of 176 Page 123

State the units in which pressure is measured.

Pressure is an expression of force exerted on a surface per unit area. The standard unit of pressure is the Pascal (Pa), equivalent to one newton per meter squared (N/m2)


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3

What is the value of relative density of water?

 4

Name the quantity whose one of the units is Pascal (Pa).

 6

State whether the following statements are true or false:

(a) The buoyant force depends on the nature of object immersed in the liquid.


(b) Archimedes’ principle can also be applied to gases.

 7

In which direction does the buoyant force on an object due to a liquid act?