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The pressure at 10 m below the surface of the ocean is about 2.00×10^{5}_{ Pa.}
Which of the following statements is true?

Now consider he pressure at 20 m below the surface of the ocean.
This pressure is 

♦ Relevant knowledge
The pressure is the measurement of force that is that is applied to a single surface of the body due to external or internal forces or weight. It is measured by the barometer found in fluids. The pressure is based on the force or weight that is applied to the objects as well as the surface area.
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This problem can be solved by combining variation in pressure and depth within a fluid.
To calculate the total pressure, first use relation between atmospheric pressure and static liquid pressure
To calculate the force, use the relationship between area and total pressure.
The container can be used to measure the fluid’s depth.
The expression for the object’s weight is:
W refers to the object’s weight, M refers to the object’s mass, and G indicates the acceleration caused by gravity.
The volume of the object is
A refers to the area of an object, and H refers to the fluid’s depth.
For the force, expression is:
F here is the force.
The static fluid pressure can be expressed as:
P_{stal} here is the static fluid pressure.
To get the total pressure, the container must be exposed to the atmosphere.
The expression for total pressure is:
is a total pressure, and P_{atm} is the atmospheric pressure.
(1) The expression for total pressure is:
here is the total pressure at 10m under the ocean’s surface.
Substitute 1.013×10^{5} to P_{atm} and 1.008×10^{5} to P_{stal(10m)}.
For the force, expression is:
F here is the force.
Substitute 2.021×10^{5} to Pa and 1 m^{2} to A.
(2) The static fluid pressure can be expressed as:
Consider the pressure at 20 meters below the ocean’s surface. The pressure at 20m will equal the pressure at 10m plus the pressure at the 10m top 10m below.
This means that the pressure at a depth 10m must equal the pressure at a column seawater 1 m^{2} cross section and 10m high.
Part 1: Ans
A column of seawater 1 m^{2} with a cross section of 10m high and a column containing the same cross section that extends to the top is approximately .