The pressure of confined air is p. If the atmospheric pressure is P, then

Question

The pressure of confined air is p. If the atmospheric pressure is P, then (A) P is equal to p (B) P is less than p (C) P is greater than p (D) P may be less or greater than p depending on the mass of the confined air

Tardigrade Admin · Accepted Answer

Pressure at point A=P (Hydrostatic paradox) and P+ρw g h= pressure at A=p ⇒ P=P-ρw g h So, P < P

Q. The pressure of confined air is $p$ . If the atmospheric pressure is $P$ , then

P is equal to p

P is less than p

P is greater than p

P may be less or greater than p depending on the mass of the confined air

Pressure at point $A = P$ (Hydrostatic paradox)
and $P + ρ_{w} g h =$ pressure at $A = p$
$\Rightarrow P = P - ρ_{w} g h$
So, $P < P$

Q. The pressure of confined air is p. If the atmospheric pressure is P, then