The Pressure At 10 Below The Surface Of The Ocean Is About2.00×105 .Which Of The Following Statements Istrue?

The Pressure At 10 Below The Surface Of The Ocean Is About2.00×105 .Which Of The Following Statements Istrue?

The pressure at 10{\rm m}below the surface of the ocean is about2.00×105Pa.
Which of the following statements istrue?
The weight of a column of seawater 1{\rm m}^2in cross section and 10{\rm m}high is about 2.00×105\rm N.
The weight of a column of seawater 1{\rm m}^2in cross section and 10{\rm m}high plus the weight of a column of air with thesame cross section extending up to the top of the atmosphere isabout 2.00×105\rm N.
The weight of 1{\rm m}^3of seawater at 10{\rm m}below the surface of the ocean is about2.00×105\rm N.
The density of seawater is about2.00×105 times the density of air at sealevel.
Now consider he pressure at 20{\rm m}below the surface of the ocean.
This pressure is
twice that at a depth of 10{\rm m}.
the same as that at a depth of 10{\rm m}.
equal to that at a depth of 10{\rm m}
plus the weight of a column of seawater 1{\rm m}^2in cross section and 10{\rm m}high.
equal to the weight of a column of seawater 1{\rm m}^2in cross section and 20{\rm m}high.

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