A wet towel is left on a radiator in a room turned on at 30°C. Another wet towel of the same size and material is hung on a washing line outside. The temperature is 15°C and there is a steady breeze. Which towel will dry the quickest and why?
Answers
Answer:
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Explanation:
When a wet object dries, it is because the liquid water that is on the object evaporates to water vapor and diffuses out into the air. On the molecular scale, object wetness consists of many water molecules loosely and non-statically bonded to each other in liquid form, as well as bonded to the object. Drying consists of individual water molecules breaking free of their bonds to each other and to the object, and then flying out into the air. The speed at which a wet object dries is therefore determined by the net evaporation rate of the liquid water on the object.
In general, the drying rate of a particular wet object is influenced by three main factors: the temperature of the liquid water on the object, the concentration of the water molecles in the surrounding air, and the air flow rate.