Passage V
Researchers conducted an experiment to determine the factors affecting heat flow. In each trial, one or more blocks of a particular material was (were) placed between two walls at constant temperatures T1 and T2 in one of the configurations shown in Figure 1. Heat was transferred through the block(s) from the hotter wall to the cooler wall. This heat flow, measured in joules per second (J/sec), is shown in Table 1.
(Note: All blocks used in the experiment were identical in size and shape. In each configuration, the contact area was the surface area of the end of the block(s) against one wall.)
29. Trials 1 and 3 provide evidence that heat flow depends on which of the following factors?
Your Answer is
Correct Answer is A
Explanation
Look at table 1 and find that the difference between trail 1 and trail 3 is that configuration A and configuration C are used respectively;
Look at figure 1 again, the difference between the two is the distance between the two walls