A graph of energy consumption in the United States versus time slopes upward. This indicates that energy consumption has _____ .
2 answers:
Answer: Option (a) is the correct answer.
Explanation:
The graph shows that as and when time increases the need for energy consumption also increases.
This might be due to increase in population with time that has lead to increase in consumption of energy.
Thus, we can conclude that out of the given options, a graph of energy consumption in the United States versus time slopes upward. This indicates that energy consumption has increased.
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Answer:
0.86 g/mL
Explanation:
In order to solve the problem, you have to know the formula for "Density." Density refers to<em> </em><em>"mass per unit volume." </em><em>It's formula is:</em>
- <em>Density (ρ) = </em>
<em />
Next, we have to convert the units of measurement in accordance to what is being asked in the problem. It is asking for "g/mL," which means we have to convert 1.25 quarts<em> (qt.) </em>to mL and 2.25 pounds<em> (lbs.)</em> to grams.
Let's solve.
- 1 quart = 946.35 mL
1.25 qt. x =<em> 1,182.94 mL</em>
- 1 pound = 453.592 grams
2.25 pounds x = <em>1,020.58 grams</em>
Now that we converted them to their appropriate units of measurement, we can now solve for density.
- <em>ρ = </em>
- <em>ρ = </em>
<em />
- <em>ρ = 0.86 g/mL</em>
<em>The density of the motor oil is 0.86 g/mL</em>