write the observation what you understand
please help me this is the experiment
Answers
Answer:
The upper portion of the glass contains air and hence presses the water down. The force on the cover due to water is
A
(
P
1
+
h
ρ
g
)
; where
A
is the area in the upper portion of the glass,
h
is the height of the water column and
ρ
is the density of water. From the bottom the force is
P
0
A
; where
P
0
is the atmospheric pressure. The fact that the card does not fall tells that
P
1
<
P
0
. How did
P
1
become smaller than
P
0
? When you covered the glass, the air trapped was at the atmospheric pressure
P
0
. It is the same air that is now in the upper portion (provided you have not allowed air to leak out or leak in during inverting the glass) the volume of air should be the equal to
V
air
=
V
glass
−
V
water
. If both remain the same, the volume of air should remain the same. The temperature is anyway the same. So from
P
V
=
n
R
T
, the pressure should remain the same, that is
P
0
.
Answer:
Hello dear army, here is your answer
The picture above depicts freezing of water. It shows how a liquid ( water) changes into a solid ( frozen water or ice) when the atmosphere around it gets colder.
hope it helps
have a bangtastic day ahead