試題詳解

11, Sam, a typical college student, needs to bake a mini cubical cake of 512.0 cm³for an upcoming party. The cake dough needs to be heated from 25℃ to 190℃ and baked for 1.5 hours. However, the kitchen oven is broken, and the only heat source available is a large old electric stove that heats up to 120℃. If Sam puts the cake onto the 120℃ electric stove, is it possible to concentrate the heat from electric stove and heat the cake to 190 ℃?
(A) Yes, it is possible if the stove is at least 3 times as large as the cake.
(B) Yes, if the cake dough is placed at the exact center of the stove, heat would flow in from all sides to heat it up.
(C) No, heat cannot flow from a colder object to a hotter object.
(D)No, because heating the cake dough like this would violate the first law of thermodynamnics.