Question

when you leave a cup of hot coffee in a room, it cools down over time. what principle of the second law of thermodynamics does this illustrate?
heat is transferred from hot to cold
heat remains constant in the system
heat is transferred from cold to hot
heat is transferred from hot to hotter

Explanation:

The second - law of thermodynamics states that heat naturally flows from a region of higher temperature to a region of lower temperature. When hot coffee cools down in a room, heat is transferred from the hot coffee (higher temperature) to the cooler surroundings (lower temperature).

Answer:

heat is transferred from hot to cold