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प्रश्न
How much pressure do we carry on our heads? why don't we feel it?
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उत्तर
We carry atmospheric pressure of about 105 Pa on our heads. We don't feel it because this atmospheric pressure is balanced by the pressure created by the air and blood inside our body.
संबंधित प्रश्न
What name is given to thrust per unit area ?
Fill in the blank with suitable word :
Force acting on a unit area is called...................
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In fluids (liquids and gases), pressure acts in....................directions, and pressure.................as the depth increases.
Fill in the blank with suitable word :
In order to sink in a fluid, the density of an object must be .................. than the ................ of the fluid.
Pressure inside a liquid increases with
Describe an experiment to show that the liquid pressure at a point increases with the increase in height of the liquid column above that point.
Name two common fluids.
Why does it happen?
The wall of a dam is broad at its base.
If the volume of the object is above the water surface, then the object is less dense.
Assertion (A): The force acting on the surface of a liquid at rest, under gravity, in a container is always horizontal.
Reason (R): The forces acting on a fluid at rest have to be normal to the surface.
