According to the second law of thermodynamics, heat will flow from which temperature to which temperature?

The second law of thermodynamics states that heat energy naturally flows from a region of higher temperature to a region of lower temperature. This principle highlights that energy tends to disperse or spread out over time. Thus, when we have two objects at different temperatures, the one that is hotter will transfer heat to the cooler object until thermal equilibrium is reached.

This natural direction of heat flow is a fundamental characteristic of thermodynamic processes. In practical terms, it means that if you place a hot cup of coffee on a table, heat will flow from the coffee, which is at a higher temperature, to the cooler air surrounding it, causing the coffee to gradually lose heat and cool down. This concept is essential not only in understanding heat transfer but also in a wide range of applications in physics and engineering.

While other options may describe different ideas of temperature relationship, the correct answer aligns directly with the established principles of thermodynamics.