What indicates that two objects are in thermal equilibrium?
Responses
The objects are the same size.
The objects are the same size.
The objects have the same temperature.
The objects have the same temperature.
The objects are touching each other.
The objects are touching each other.
The objects' temperatures are changing.
None of the above responses indicate that two objects are in thermal equilibrium.
Two objects are in thermal equilibrium when they have the same temperature and there is no net flow of heat between them. This means that they do not necessarily need to be the same size or touching each other. The fact that the objects' temperatures are changing does not indicate thermal equilibrium, as thermal equilibrium implies a constant temperature.