Final answer:
Heat always flows from hot to cold according to the principle of heat transfer.
Step-by-step explanation:
True. According to the law of thermodynamics, heat always flows from a region of higher temperature to a region of lower temperature, which is known as the principle of heat transfer. This principle holds true in all systems and is a fundamental concept in physics. For example, if you touch a hot pan, the heat will transfer from the pan to your hand until they reach the same temperature.
Learn more about Heat transfer in physics