Power and Energy 2A: The effect of heating power

This means the longer (t) you turn on a heater, the more heat (Q) it will produce. And the higher the power (P) is, the more heat (Q) it will produce.

Two identical, closed boxes each have a round heater at the center, with the power output as labeled.

1. Run the model and turn the graph on to monitor the temperatures.
2. Use the buttons at the upper-right corner of the graph window to rescale the curves if necessary.
3. Calculate the ratio of the temperatures measured by the two thermometers in the two boxes and compare it with the ratio of the heating powers.

You may turn the "heat flux lines" on to observe how heat flows from the heaters and loses through the walls. The arrows on the heat flux lines represent the direction of heat flow.

Change the power setup two more times and repeat the procedure. Write down your results in your workbook.