Chapter 1.6, Problem 9C

To determine

To findthe change in temperature from $32°\text{F to }-10°\text{F}$

Answer to Problem 9C

The change in temperature from $32°\text{F to }-10°\text{F}$ is $42°\text{F}$

Explanation of Solution

Given information:

Initial temperature, ${\text{T}}_{\text{i}}=32°\text{F}$

Final temperature, ${\text{T}}_{\text{f}}=-10°\text{F}$

Calculation:

Subtract initial temperature from final temperature $\left({\text{T}}_{\text{f}}-{\text{T}}_{\text{i}}\right)$ to find the change in temperature,

  $\begin{array}{l}{\text{ T}}_{\text{f}}-{\text{T}}_{\text{i}}\\ =-10-32\left[{\text{Substitute values of T}}_{\text{f}}{\text{ and T}}_{\text{i}}\right]\\ =-10+\left(-32\right)\text{ [To subtract 32, add its opposite, }-32]\\ =-42\left[\text{Add}\right]\end{array}$

Hence, change in temperature from $32°\text{F to }-10°\text{F}$ is $-42°\text{F}$