Question

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Answer 1

Explanation:

Electron' is the 'fundamental particle' that can be displaced when atoms will rub against each other and they undergo a "chemical reaction"

Answer 2

Answer:

1. it increases the speed..

2. frictional force.

3.the s.i unit of force is: the Newtown, which is defined as kiogram meter per second ...

4.ball bearing..

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