Question

Different objects sitting around in a room feel warmer or cooler. If they are in thermal equilibrium, what must be true of their temperatures?

Answer 1

If two bodies are in thermal equilibrium, their temperature shall be same.

As for coldness or warmth, we generally observe that metals feel colder while non metallic objects don't (i.e. comparatively they feel warmer than metals). This is due to the fact that metals are good conductor of heat. So when swe touch a metallic body, heat flows from our body and is transferred to other points of the metal object. Since our body loses heat, we feel cold. In non metals, this conduction of heat from point of contact to other locations does not happen. So the amount of heat loss from our body is much smaller. So we don't feel that cold.