Since the Rate of Heat Transfer by Conduction Is Proportional $\Delta$

question 17

Multiple Choice

Since the rate of heat transfer by conduction is proportional to the $\Delta$ T, what percent savings in your heating bill would you expect if you turned the thermostat down from 75 $\degree$ to 65 $\degree$ , and the outside temperature is 25 $\degree$ F?

• A) 10%
• B) 20%
• C) 30%
• D) 40%
• E) 50%

---

Definitions:

Persuasive Impact

The effect of communication or argumentation in convincing or influencing others to change their beliefs, attitudes, or behaviors.

Dependent Variable

In an experimental study, it is the variable being tested and measured, expected to change as a result of manipulations to the independent variable.

Independent Variable

A variable in an experiment that is manipulated or changed by the researcher to study its effects on the dependent variable.

Extraneous Variable

A variable that is not of interest in a study but may affect the outcome of the experiment if not controlled.