Final answer:
The temperature that is fifteen degrees lower than 2 degrees Celsius is -13 degrees Celsius. This is calculated by subtracting 15 from 2.
Step-by-step explanation:
To find the temperature that is fifteen degrees lower than 2 degrees Celsius, you simply subtract 15 from 2. The calculation is as follows:
2 °C - 15 °C = -13 °C
Therefore, the final temperature is -13 degrees Celsius. This conversion is straightforward since the Celsius scale is based on a decimal system where each increment is equal to one degree, and the modern standardization ensures that the scale is very close to the old centigrade scale, with less than a 0.1° difference. No need to convert into kelvin as a kelvin is the same size as a degree Celsius for temperature change.