Question

dec. 2 thermal energy day 1 notes practice
eventually, the coffee, cup, and air will reach _____.
10 °c 10 °c
30 °c
10 °c 10 °c
options: different temperatures, their boiling points, thermal equilibrium, the same kinetic energy level

Explanation:

This question is about thermal energy and heat transfer. Thermal equilibrium is the state where objects in contact reach the same temperature (no net heat transfer). The coffee, cup, and air will exchange heat until they have the same temperature, which is thermal equilibrium. "Different temperatures" is incorrect (heat transfer stops at same temp), "Their boiling points" is irrelevant (not about boiling), and "Same kinetic energy level" is wrong (kinetic energy depends on mass/temp, not just temp equality).

Answer:

C. Thermal equilibrium