Question

Which of these actions would increase heat transfer between two objects?

establishing their thermal equilibrium
increasing the area of their contact
using objects with similar specific heats
reducing the time of their contact

Answer 1

To increase heat transfer between two objects, the most effective action would be **increasing the area of their contact**.

Here's a breakdown of the options:

1. **Establishing their thermal equilibrium** - This actually stops heat transfer as the temperatures of the objects equalize.

2. **Increasing the area of their contact** - This would facilitate more heat transfer as it allows more surface area for conduction to occur.

3. **Using objects with similar specific heats** - While specific heat influences how much energy it takes to change the temperature of an object, it isn't directly related to the rate of heat transfer itself.

4. **Reducing the time of their contact** - Shortening the contact time would reduce the overall heat transfer as there is less time for heat to move from one object to the other.

Thus, increasing the area of contact is the action that would effectively enhance heat transfer between two objects.