Answer the following question given this paragraph: 

T ºF = 9 T ºC + 32 5 5 T ºC = ⎛⎝T ºF − 32⎞⎠ 9 T K = T ºC + 273.15 T ºC = T K − 273.15 • Systems are in thermal equilibrium when they have the same temperature. • Thermal equilibrium occurs when two bodies are in contact with each other and can freely exchange energy. • The zeroth law of thermodynamics states that when two systems, A and B, are in thermal equilibrium with each other, and B is in thermal equilibrium with a third system, C, then A is also in thermal equilibrium with C. 13.2 Thermal Expansion of Solids and Liquids • Thermal expansion is the increase, or decrease, of the size (length, area, or volume) of a body due to a change in temperature. • Thermal expansion is large for gases, and relatively small, but not negligible, for liquids and solids. • Linear thermal expansion is.


Q: Systems are in thermal equilibrium when they have the same of what measurement?


A:
temperature