what are used in the machine to protect their surfaces from wear due to friction.
Answers
Answered by
3
Answer:
Lubrication between machine parts.
Answered by
2
Answer:
lubricants
Explanation:
substances known as lubricants are used in the machine to protect their surfaces from wear due to friction.
they fill the irregularities on the surface and make it smooth.
examples are oil and grease in liquids
and
graphite in solids.
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