Question

Unit 2 & 3: Energy Test
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Question
Possible Points: 3.33
Aya performed an experiment in which she placed three pairs of identical copper blocks into three vacuum chambers. For each pair of blocks, one block was left at room temperature, 25°C, and the other block was heated to 100°C. In the first chamber, the pair of blocks were placed next to each other in direct contact. In the second chamber, the blocks were placed six inches apart. In the third chamber, the blocks were placed six inches apart and then the chamber was filled with oxygen gas. Each chamber was observed for one hour, then the temperature of each block was measured. The diagram illustrates the experiment.



Which of the following tables most likely describes the experiment?
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Answer 1

It seems you're looking for a table that describes the results of Aya's energy experiment involving copper blocks in vacuum chambers under varying conditions. Based on the experiment's design, we can infer the possible outcomes for each of the three chambers.

Here’s a possible table that summarizes the experiment results based on the given conditions:

| Chamber Conditions | Temperature of Room Temperature Block (°C) | Temperature of Heated Block (°C) | Observations/Notes |
|-------------------------------------------------|--------------------------------------------|----------------------------------|-----------------------------------------------------------|
| 1: Direct contact | 25 | ~100 | Heat transfer is efficient due to direct contact. |
| 2: Six inches apart (vacuum) | 25 | ~75-90 | Reduced heat transfer due to distance and vacuum. |
| 3: Six inches apart (filled with oxygen gas) | 25 | ~70-85 | Gas surrounding may slightly inhibit heat transfer. |

### Explanation of the Table:
- **Chamber 1** has direct contact, which allows for maximum heat transfer through conduction; thus, the heated block likely retains its temperature close to 100°C, while the room-temperature block remains at 25°C.
- **Chamber 2**, with blocks six inches apart in vacuum, would show some decrease in the heated block's temperature compared to direct contact but significantly better than in chamber 3 due to less heat being lost.
- **Chamber 3**, while filled with oxygen gas, would have even poorer thermal transfer when blocks are six inches apart compared to direct contact or shorter distances, resulting in a potentially lower temperature for the heated block due to convective and conductive losses.

You can modify the specific temperature results based on the expected heat transfer coefficients and time, but this table should give you a general sense of how to present the data.