Question

When a cold drink is taken from a refrigerator, its temperature is 5°C. After 25 minutes in a 20°C room, its temperature has increased to 10°C. Round your answers to two decimal places. What is the rate of change of the temperature of the cold drink?

1) 0.20°C/min
2) 0.40°C/min
3) 0.60°C/min
4) 0.80°C/min

Answer 1

The rate of change of the cold drink's temperature is 0.20°C/min, which is calculated by taking the change in temperature (5°C) and dividing it by the time period (25 minutes).

Step-by-step explanation:

The rate of change of the temperature of the cold drink can be calculated by finding the difference in temperature over the difference in time. The formula to compute the rate of change (R) is R = ΔTemperature / ΔTime. In this case, the temperature increased from 5°C to 10°C, which is a change of 5°C. The time taken for this change is 25 minutes.

To compute the rate of change, you use the formula: R = (10°C - 5°C) / 25 minutes = 5°C / 25 minutes = 0.20°C/min.