Question

Define about evidence of air In physics
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Answer 1

Answer:

For a moving solid body, there are two principal types of friction that act upon it:

The force resisting the motion of a rolling body on a surface is known as Rolling friction or Rolling resistance. Rolling of ball or wheel on the ground is an example of Rolling friction.

The other type of friction is Sliding friction. In this type of friction, there is a restriction on the body’s movement as only one side of the body is in contact with the surface. Pushing a box across the table is an example of Sliding friction.

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Answer 2

Answer

• Proving that air is matter is analogous to today's physics experiments where you cannot see the object of your study, but have to define its properties and its existence from indirect evidence. .The difference in weight is the weight of the air.

Modern Air Definition

• Air is the general name for the mixture of gases that makes up the Earth's atmosphere. This gas is primarily nitrogen (78%), mixed with oxygen (21%), water vapor (variable), argon (0.9%), carbon dioxide (0.04%), and trace gases.