Question

At work, Brett must check and record the internal temperature of the freezer on an hourly basis. When working properly, the temperature should remain constant over time. What word describes the slope of a line showing the temperature of the freezer as a function of time in hours when the freezer is working properly? positive zero

Answer 1

Answer: the slope of the line will be zero

Explanation:

From the question above, it is said that when the freezer is working perfectly the temperature remains constant over time. This means that if the graph of temperature and time is drawn, the slope of the graph will be constant from one point of the graph to the other, which means that the values will cancel each other and it will be zero

Answer 2

Answer: Newton's law of cooling

The curve is called Newton's cooling curve,the change in actual temperature with change in time( slope) will be ZERO(0) since the set temperature is constant.

Explanation: This law states that at constant conditions the change in temperature is directly proportional to time.

The slope =∆T/∆time

Where ∆T is the change in temperature plotted in the vertical axis in degrees Celsius and ∆time is the change in time in the horizontal axis in hours.

The hourly recording of the temperature and time under constant conditions in fridge will show a directly proportional relationship between change in temperature and the change in time.