When analyzing the flow of heat between two objects, it is essential to remember a fundamental principle of thermodynamics: heat always flows from the hotter object to the colder one until thermal equilibrium is reached.
Let's analyze each example:
1. Example 1: Fire (hot) and an unknown Object 2:
- Since fire is extremely hot, it will transfer heat to Object 2.
- Conclusion: Heat will flow from Object 1 to Object 2.
2. Example 2: Metal at [tex]\(80^{\circ}C\)[/tex] (Object 1) and metal at [tex]\(12^{\circ}C\)[/tex] (Object 2):
- The metal at [tex]\(80^{\circ}C\)[/tex] is much hotter compared to the metal at [tex]\(12^{\circ}C\)[/tex].
- Therefore, heat will flow from the hotter metal (Object 1) to the colder metal (Object 2).
- Conclusion: Heat will flow from Object 1 to Object 2.
3. Example 3: The cool ocean (Object 1) and the warm air (Object 2):
- The warm air is hotter compared to the cool ocean.
- Thus, heat will transfer from the warm air (Object 2) to the cool ocean (Object 1).
- Conclusion: Heat will flow from Object 2 to Object 1.
4. Example 4: A tool with a lot of thermal energy (Object 1) and a material with little thermal energy (Object 2):
- The tool with a lot of thermal energy is hotter compared to the material with little thermal energy.
- Hence, heat will flow from the tool (Object 1) to the material (Object 2).
- Conclusion: Heat will flow from Object 1 to Object 2.
Summarizing these observations:
- Heat flows from Object 1 to Object 2 in Examples 1, 2, and 4.
- Heat flows from Object 2 to Object 1 in Example 3.
Therefore, the statement that accurately describes the flow of heat in each example is:
"Heat will flow from Object 1 to Object 2 in examples 1, 2, and 4, and heat will flow from Object 2 to Object 1 in Example 3."
