An ice cube is dropped into a cup of hot coffee. As the ice cube melts,...
An ice cube is dropped into a cup of hot coffee. As the ice cube melts, which of the following is true?
-Heat flows from ice cube to coffee and the ice cube does work on the coffee.
-Heat flows from coffee to ice cube, no work is done.
-Heat flows from ice cube to coffee, no work is done.
-Heat flows from coffee to ice cube and the liquid does work on the ice cube.
Homework Answers
Answer- Heat flows from coffee to ice cube, no work is done.
Heat is always flow from high temperature to low temperature. Hence it flow from coffee to ice cube. Ice cube is melt, hence heat is used to convert ice into water i.e. phase is changed. Hence no work is done and this heat is latent heat.
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