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kramer
3 years ago
8

Which of the following reduces friction in an engine A)wear B)drag C)motor oil D)defractionation

Engineering
2 answers:
kobusy [5.1K]3 years ago
3 0

It is motor oil, as oil is used to reduce friction

Ad libitum [116K]3 years ago
3 0
The answer would be motor oil
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zzz [600]

Answer:

The expression is shown in the explanation below:

Explanation:

Thinking process:

Let the time period of a simple pendulum be given by the expression:

T = \pi \sqrt{\frac{l}{g} }

Let the fundamental units be mass= M, time = t, length = L

Then the equation will be in the form

T = M^{a}l^{b}g^{c}

T = KM^{a}l^{b}g^{c}

where k is the constant of proportionality.

Now putting the dimensional formula:

T = KM^{a}L^{b}  [LT^{-} ^{2}]^{c}

M^{0}L^{0}T^{1} = KM^{a}L^{b+c}

Equating the powers gives:

a = 0

b + c = 0

2c = 1, c = -1/2

b = 1/2

so;

a = 0 , b = 1/2 , c = -1/2

Therefore:

T = KM^{0}l^{\frac{1}{2} } g^{\frac{1}{2} }

T = 2\pi \sqrt{\frac{l}{g} }

where k = 2\pi

8 0
3 years ago
Resistance to impact is an example of a(n)
Anika [276]

Answer:

Mechanical property

Explanation:

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Lastly any metal, material or physical properties that has the strength , hardness and resistance to withstand or remain unaffected despite the loads or forces use on them is an example of MECHANICAL PROPERTIES.

Therefore Resistance to impact is an example of a(n) MECHANICAL PROPERTIES.

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Answer:

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If switches A and B produce True or False, then Light will be True for ...

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Answer:

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b) po exp( 4∪x/l)

Explanation:

please check the attachment for proper explanation and proper sign notations thanks.

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3 years ago
Which of the following explains the difference between conservation and preservation?
Natalija [7]

Answer:

b

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