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Paraphin [41]
2 years ago
11

Friction is caused by microscopic bumps on surfaces is called

Health
2 answers:
Gnoma [55]2 years ago
4 0
................Microwelds
zloy xaker [14]2 years ago
3 0
Microwelds which is the source of friction between two surfaces pressed together. air resistance. acts in the opposite direction to that of an object in motion.
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