The table shows the same data about how the temperature of each phone battery changed over 5minutes.

Question

Battery Initial temperature (°C) Final temperature (°C)
Battery in the less expensive phone 38 24
Battery in the more expensive phone 38 27
Which statement is correct?

A. thermal energy was transferred more quickly out of the battery in the less expensive phone.
B. thermal energy was transferred more quickly out of the battery in the more expensive phone.
C. thermal energy was transferred out of both batteries at the same rate

Answer 1

To determine which statement is correct regarding the thermal energy transfer between the two phone batteries, we can analyze the temperature changes over the 5 minutes.

1. The initial temperature for both batteries is the same at 38°C.
2. The final temperature of the battery in the less expensive phone is 24°C, which indicates a change of 14°C (38°C - 24°C).
3. The final temperature of the battery in the more expensive phone is 27°C, which indicates a change of 11°C (38°C - 27°C).

Since the less expensive phone's battery decreased in temperature by 14°C, while the more expensive phone's battery decreased by only 11°C, it can be inferred that the thermal energy was transferred more quickly out of the battery in the less expensive phone.

Thus, the correct statement is:

A. thermal energy was transferred more quickly out of the battery in the less expensive phone.