During a Science Lab, Students Heated Water, Allowed It to Cool

question 13

Essay

During a science lab, students heated water, allowed it to cool, and recorded the temperature over time. They computed the
difference between the water temperature and the room temperature. The results are in the table. $$\begin{array} { | l | l | l | l | l | l | l | } \hline \text { Time (in minutes) } & 10 & 20 & 30 & 40 & 50 & 60 \\\hline \text { Difference in temp. (degrees F) } & 68 & 36 & 20 & 10 & 6 & 4 \\\hline\end{array}$$
-Use the equation = 2.057 - 0.025\) time to predict the difference in temperature after 45 minutes.

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Definitions:

Net Present Value

It calculates the difference between the present value of cash inflows and outflows over a period of time, used to assess the profitability of an investment.

Internal Rates

An implied or internal rate referring to the interest rates or yields on investments, loans, or other financial products within an organization.

Break-even

The point at which total revenues equal total costs, resulting in no net profit or loss.

Accounting Break-even

The point at which a company's revenues exactly cover its expenses, without generating a profit or a loss.