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Physics
Physics
Problem
Which of the following relations gives the absolute pressure
P
P
P
at a depth
h
h
h
below the free surface of a liquid of density
ρ
\rho
ρ
, if the atmospheric pressure at the surface is
P
0
P_0
P
0
? a)
P
=
P
0
−
ρ
g
h
P = P_0 - \rho g h
P
=
P
0
−
ρ
g
h
b)
P
=
ρ
g
h
P = \rho g h
P
=
ρ
g
h
c)
P
=
P
0
+
ρ
g
h
P = P_0 + \rho g h
P
=
P
0
+
ρ
g
h
d)
P
=
P
0
+
1
2
ρ
g
h
P = P_0 + \dfrac{1}{2}\rho g h
P
=
P
0
+
2
1
ρ
g
h
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