Question

when object 1 came into contact with object 2, object 2 got warmer. what can be concluded about the ot before they came into contact with each other?

object 2 did not have thermal energy.

object 1 had faster - moving particles.

object 1 had less thermal energy.

object 2 had fewer particles.

Explanation:

1. Analyze Option 1: All objects have thermal energy (due to particle motion), so Object 2 must have had thermal energy. Eliminate this.
2. Analyze Option 2: Heat transfer occurs from higher - temperature (faster - moving particles, as temperature relates to average kinetic energy of particles) to lower - temperature objects. Since Object 2 got warmer, heat transferred from Object 1 to Object 2, meaning Object 1 had a higher temperature (faster - moving particles) initially. This is correct.
3. Analyze Option 3: If Object 1 had less thermal energy, heat would transfer from Object 2 to Object 1, and Object 2 would get cooler, not warmer. Eliminate this.
4. Analyze Option 4: The number of particles doesn't directly determine heat transfer in this context (heat transfer depends on temperature difference, not just particle count). Eliminate this.

Answer:

B. Object 1 had faster - moving particles