Question

The more is the —- of the two surfaces in contact more is the force of friction

Answer 1

Answer:

The more atoms that are interacting in the two surfaces, the greater the total frictional force.

Explanation:

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Answer 2

Answer:

You could say that when two surfaces come near each other (call them surface A and surface B), the atoms in surface B get close enough to interact with surface A. The more atoms that are interacting in the two surfaces, the greater the total frictional force.

Explanation: