Fenella is standing in a completely sealed room that has no windows and the walls are perfectly insulated. She is holding a cup of hot coffee. What will Fenella likely observe about the temperature of the room after holding the cup for a while? Make your response very short.
Fenella will observe that the room feels slightly warmer. The heat from the cup of hot coffee will gradually dissipate into the air of the room. Even though the walls are perfectly insulated, which prevents heat from escaping outside, the coffee will still transfer its heat to the surrounding air. Over time, this will cause the air temperature in the room to rise slightly, making the room feel warmer to Fenella.