Question

In hot weather, using a fan instead of

an air conditioner requires less energy.

A It is the subject of the sentence.

B It is the direct object of the

verb requires.

It is a predicate nominative.

D

It is the object of the preposition In.

Answer 1

Using a fan feels refreshing because it enhances convection, resulting in a faster heat transfer from your body to the air and accelerating perspiration evaporation for a cooling effect.

Step-by-step explanation:

Using a fan in the summer feels refreshing because it increases the flow of air around your body, replacing warm air with cooler air from the surrounding environment. This process is due to convection, which enhances the rate of heat transfer, making moving air feel cooler than still air. In addition, the moving air boosts the evaporation of perspiration from the skin, which carries away heat and has a cooling effect. While fans do add a small amount of heat to the room due to their operation, the cooling sensation from the enhanced evaporation overshadows this effect. In contrast, air conditioners work by transferring heat from inside to outside and require more energy input, but they can decrease the room's temperature as opposed to just the perceived temperature.