Is the exact same thing happening to the iron and brick from 2) and 3)? Are you sure? Let's check. Press the reset button at bottom right to return everything to room temperature. Check the energy symbol box. This time, check the "link heaters" box, too. Drag thermometers to both the brick and iron, and place each on top of a heater. Add heat until both both reach maximum temperature on the thermometer, and observe which one gets hotter the fastest.

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2 points
The temperature of both increases at the same rate.
The brick is getting hotter faster than the iron.
The iron is getting hotter faster than the brick.

It is not possible to directly answer this question based on the given information. Please follow the instructions provided to check and observe which material gets hotter faster.