Answer to Question #167466 in Physics for Xander

Question

As part of his meal, a workman has a cup containing a hot drink. In order to keep the drink hot whilst he eats the rest of his meal, he covers the cup, as shown in Fig. 5.1.

(a)    Which sources of energy loss does this action reduce? Tick (check) two boxes. [2]

Answer 1

• Convection from the surface of the liquid
• Evaporation from the surface of the liquid