Explain why (a) To keep a piece of paper horizontal ,you should blow

1.	Explain why (a) To keep a piece of paper horizontal ,you should blow over , not under , it
Answer» Solution :When we blow over the of paper , the velocity of AIR increases . As a RESULT , the pressure (P) on it decreases in accordance with the Bernoulli.s THEOREM whereas the pressure below REMAINS the same asatmospheric presseure Pa. Thus , the paper remains horizontal.

Discussion