How high a column of air would be necessary to cause the barometer to read 76cm of hg?
Answers
Answered by
0
Explanation:
Explanation:
The pressure is
p
=
ρ
g
h
The density is
ρ
k
g
m
−
3
The height is
h
m
and
g
=
9.8
m
s
−
2
Height of the column of air is
h
a
i
r
Height of the column of mercury is
h
H
g
Therefore,
ρ
a
i
r
g
h
a
i
r
=
ρ
H
g
g
h
H
g
h
a
i
r
=
ρ
H
g
h
H
g
ρ
a
i
r
=
13.6
⋅
10
3
⋅
0.76
1.2
=
8613
m
Answered by
0
Answer:
p
=
ρ
g
h
The density is
ρ
k
g
m
−
3
The height is
h
m
and
g
=
9.8
m
s
−
2
Height of the column of air is
h
a
i
r
Height of the column of mercury is
h
H
g
Therefore,
ρ
a
i
r
g
h
a
i
r
=
ρ
H
g
g
h
H
g
h
a
i
r
=
ρ
H
g
h
H
g
ρ
a
i
r
=
13.6
⋅
10
3
⋅
0.76
1.2
=
8613
m.
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