people keep things in the to keep things cool
perishables.
in ancient time the people use ice and snow to preserve the food. Then they think about a machine to cool the food . this leads to the invention of refrigerator.
It keeps stuff cool
No, there are special motors constructed for use in an explosive or hazardous environment that are totally enclosed. The normal motor though needs air to keep it cool.
white
Magnetism and friction
because it helps keep the things inside cool
You can use it as chalk, camouflage your skin, and some people put it in old freezers and fridges to keep out moisture
keep anoying them till they do it
if you keep them safe then yes
we dont.