15. Suppose that Tank Y had been covered throughout the experiment with a lid made of the same insulating material, and having the same thickness, as the walls and base of the tank. At 2 hr, the temperature of the water at the top of Tank Y would most likely have been:
Your Answer is
Correct Answer is B
Explanation
First of all, observe figure 3 and find that when the abscissa is 2, the ordinate corresponding to the temperature of top is about 8;
Secondly, having a lid will not cause the temperature inside the container to rise, Therefore, the result of the new experiment in the title cannot be higher than the initial temperature of water by 14 degrees, and the C & D option is excluded;
Finally, compared to containers without lids, containers covered with lids are more difficult It is affected by temperature changes, which means that the cooling will be slower. In summary, it should be reasonable between 8-14°C