Find the absolute pressure at depth (P1) and at the surface
(P2)
According to the ideal gas law,
P1V1/T1 = P2V2/T2 (But T1 =T2)
=> P1V1 = P2V2
P1( water pressure below 5 m)
Fresh water has a density of 1 g per cm^3
or 1000 Kg /m^3
So at a depth of 5 m then a 1 m^2 square has a weight of water
equivalent to a column 5 m * 1m^2
= 5 m^3 acting on it .
This has a mass of 5,000 Kg
Now multiply by g ( F = mg) 5,000 * 9.8 = 4.9 * 10 ^4 Pa
Standard atmospheric pressure is 1.00 * 10 ^5 Pa
So the pressure at this depth in atmospheres is (4.9 * 10 ^4/(1.00
* 10^5)) +1 = 1.49 ATM
V1 = 1.00 cm3 (given)
And P2( surface pressure ) = 1 ATM ( pressure on surface by air
pressure)
Thus, 1.49 ATM x 1.00 cm3 = 1ATM x X
cm3
So
X = 1.49 cm3
The bubble volume will be 1.49 cm3 at the water
surface.
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