Science, asked by sk4341442, 19 days ago

Q 3 These help to decrease friction O Rollers and grooves O Oil and rollers O Oil and grooves

Answers

Answered by alexsaju7112005

0

Answer:

The Answer is: oil and rollers

Answered by ranjan12342003

0

(a) Polishing rough surfaces

(b) Using wheels, ball bearings

(c) Creating an air cushion

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