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algol13
3 years ago
15

A chain 18 feet long whose weight is 84 pounds is hanging over the edge of a tall building and does not touch the ground. How mu

ch work is required to lift the entire chain to the top of the building
Mathematics
1 answer:
coldgirl [10]3 years ago
8 0

Answer:

756 feet pound

Step-by-step explanation:

Length of the chain, L = 18 feet

weight of chain, W = 84 pound

If we lift the centre of gravity of the chain, it will entirely lift up. The centre of gravity of the uniform chain is at its mid point. So, the work done

W = weight x half of length

W = 84 x 9

W = 756 feet pound

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Naddik [55]
Hello there! 
You can use the equation:
504 ÷ 6
84
The hotel can buy 84 pillows.
Hope this helped! :D

4 0
2 years ago
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Maslowich

Answer: the answer is 3

Step-by-step explanation:

An increase of 100% in the value of (rh) means the value doubles. When that doubled value is squared, the new area is 4 times the old area.The question asks how many times GREATER the new A is than the old A. 4 times AS LARGE AS is a 300% INCREASE, which is 3 TIMES LARGER THAN.So the grammatically correct answer is 3 

3 0
1 year ago
Boyle’s law states that the volume of a gas varies inversely with applied pressure. Suppose the pressure on 60 cubic meters of g
tatyana61 [14]
\bf \qquad \qquad \textit{inverse proportional variation}
\\\\
\textit{\underline{y} varies inversely with \underline{x}}\qquad \qquad  y=\cfrac{k}{x}\impliedby 
\begin{array}{llll}
k=constant\ of\\
\qquad  variation
\end{array}\\\\
-------------------------------

\bf \stackrel{\textit{the volume of a gas varies inversely with applied pressure}}{v=\cfrac{k}{p}}
\\\\\\
\textit{we also know that }
\begin{cases}
v=60\\
p=1
\end{cases}\implies 60=\cfrac{k}{1}\implies 60=k
\\\\\\
\boxed{v=\cfrac{60}{p}}
\\\\\\
\stackrel{\textit{now if we apply 3 atmospheres, p=3, what is \underline{v}?}}{v=\cfrac{60}{3}}
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3 years ago
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Answer:

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Step-by-step explanation:

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There are no outliers, as the seven rooms for both sample have similar size and function.

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We don't know if the populations are heavily skewed, but this effect should be appeased by the sampling.

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D. There is fairly strong evidence to support a conclusion that the presence of carpet is associated with an increase or decrease in the mean bacterial concentration of air.

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3 years ago
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The answer of this question is $2.51
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2 years ago
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