問題詳情

【題組】

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, thekitchen oven is broken, and the only heat source available is a large old electric stove that heats up to120℃. If Sam puts the cake onto the 120℃ electric stove, is it possible to concentrate the heat fromelectric 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 sidesto 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.

參考答案

答案:[無官方正解]
難度:計算中-1
書單:沒有書單,新增