Question

answer fory questions.

Answer 1

Explanation:

2. When a metal is rubbed with sand paper it's usually removes the plane surface of the metals and make the surface more irregular to make the light reflect much making it shiny.

Sand paper are much hard and have irregular surface than a normal paper

3. To decrease the possibility of slipping out of the bat from our hand while playing the Handel's are made rough. This increases the friction in between hand and the handel resisting the hand to slip out.

4. When the knife's cutting age is kept near a rotating stone due to high friction some particles of the knife's metal moves out in high speed as spark. This happens to the circular motion and the outer tangent.

Answer 2

Answer:

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Explanation:

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