Question

if you blow air from mouth on to your palm it gets warmed up whereas you have a slight cooling sensation if you whiff on to your palm. why?

Answer 1

Answer:

This phenomena is related to the Gas laws

When you blow air from a small hole in ur mouth, the air molecules are forced outside with very low pressure and temperature........which makes the air feel cool

Blowing with mouth wide open results in hot air as the molecules are forced outside the mouth at high pressure and temp

hope u understand this.......do let me know if u hv any doubt