1)Which of the following can be used to measure friction?
a) N
b) PA
c) N/m²
d) m²
2) Use of lubricants makes the surface _______
a)smooth
b)shiny
c)rough
d)both a and b
Pls answer asap best answer will be marked brainliest..
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Answers
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Answer:
1 - C
2 - D
Explanation:
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