Question

I flow from a warmer object to a cooler object until both objects are the same temperature what am I?

Answer 1

HEAT flows from a warmer object to a cooler object until both objects are the same temperature. The answer is heat!

Answer 2

If you flow from a warmer object to a cooler object until they are both the same temp then you are heat. because heat flows from warm to cool until it reaches thermal equilibrium (when they are the same temp)