Question

dec. 2 thermal energy day 1 notes practice
thermal equilibrium happens when two objects are ______.
image with temperature boxes: 100° to 0°, then 50° to 50°
options (partially visible):

• option 1, unclear
• the same temperature
• far apart
• made of metal

Explanation:

To determine when thermal equilibrium occurs, we analyze the diagram: the top shows heat transfer from \(100^\circ\) to \(0^\circ\) (unequal temps), and the bottom shows no net heat transfer (both \(50^\circ\)). Thermal equilibrium is defined as when two objects reach the same temperature (no net heat flow). Other options (different components, far apart, made of metal) don’t relate to the temperature - based definition of thermal equilibrium.

Answer:

The option "The same temperature" (the second option, assuming the options are ordered as: 1. Different components, 2. The same temperature, 3. Far apart, 4. Made of metal)