Dmitri and Keiko are standing at opposite ends of a large room, each holding a cup of coffee. Dmitri's coffee is too hot to drink, and Keiko's coffee is at a comfortable drinking temperature. Without any intervention, what will happen to the temperature of their coffees over time? Respond very briefly.
As time passes, Dmitri's hot coffee will cool down, and Keiko's coffee will also cool down, but at a slower rate since it is closer to the room's temperature. This happens because the heat from the coffees will transfer to the surrounding air until thermal equilibrium is reached, where the coffee and the room air are at the same temperature. The rate of cooling is affected by the difference in temperature between the coffee and the surrounding air; the greater the temperature difference, the faster the heat will transfer. Hence, since Dmitri's coffee is hotter than Keiko's, it will lose heat more rapidly.