Question

3) Why are ventilators placed near the ceiling and room heaters placed on the floor​

Answer 1

Answer:

Hot air and cool air.

Explanation:

Hot air is lighter and rises above.

So, ventilators are placed above, in order to let the heat escape.

Cool air, being heavier, settles down.

So, room heaters are placed down, so that the air gets heated from below and disperses the cool air to make you warm.

Hope it helps.

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