RefrigeratorScience brain teasers require understanding of the physical or biological world and the laws that govern it.
On a hot summer day, a man who had no air conditioning decided that he would cool off his home by leaving the door to his refrigerator open. Does he succeed in cooling off his home?
HintDo an energy balance.
AnswerNo. All a refrigerator does is take heat from inside the unit and pump it to the back. So doing an energy balance would lead to the conclusion that no cooling overall takes place. Further investigation would reveal that the home would actually heat up since refrigerators need an electric motor to operate. This would generate additional heat, making the home hotter.
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