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stealth61 [152]
3 years ago
15

Coefficients of friction always involve how many materials? a. 0 b. 1 c. 2 d. 3

Engineering
1 answer:
True [87]3 years ago
5 0

Answer:

Answer is c. 2

Explanation:

Since friction is present at the contact  between 2 materials thus coefficient of friction always involve 2 materials

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Plant scientists would not do which of the following?
zavuch27 [327]

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i think option 4 is correct answer because itsrelated to animal not plants.

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The author states that chemical engineering is one of the most difficult and complex aspects of engineering. Why do you think th
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Answer:

hope this helps

Explanation:

answers:

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Write the chemical equation of the polymerization reaction to synthesize PS
marin [14]

Explanation:

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The equation is shown below as:

\begin{matrix}& C_6H_5 \\&|\\n H_2C & =CH\end{matrix}        ⇒                \begin{matrix}&C_6H_5 \\&|\\ -[-H_2C & -CH-]-_n\end{matrix}

6 0
3 years ago
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SpyIntel [72]

Answer:

Numbers 4, 6, & 7 are correct

Explanation:

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7- high difference between upper and lower frequencies.

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3 years ago
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