14. (Problem Solving)

Temperature

The temperature $T$ of an object is how hot or cold it is.
It is either measured in degrees Celsius (°C) or in Kelvin (K).
To convert from degrees Celsius to Kelvin, add 273: 10°C = 283K.
To convert from Kelvin to degrees Celsius, subtract 273: 300K = 27°C.
If $T$ appears in a formula by itself, then you must use Kelvin in that formula.

Temperature Change

Temperature changes or temperature differences are both represented by $Δ T$ , which is equal to $T_{f} - T_{i}$ .
It is either measured in Celsius degrees (C°) or in Kelvin (K).
Celsius degrees and Kelvin are equivalent: 10C° = 10K.
If $Δ T$ appears in a formula, you may use either Celsius degrees or Kelvin in that formula.