As shown in the figure,a large open tank contains a layer of oil ( density 450 kg/ $m ^ { 3 }$ )floating on top of a layer of water (density 1000 kg/m³)that is 3.0 m thick,as shown in the sketch.What must be the thickness of the oil layer if the gauge pressure at the bottom of the tank is to be $8.5 \times 10^4 \mathrm {~Pa} \text { ? }$

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The Answer of As shown in the figure,a large open tank contains a layer of oil ( density 450 kg/ $m ^ { 3 }$ )floating on top of a layer of water (density 1000 kg/m³)that is 3.0 m thick,as shown in the sketch.What must be the thickness of the oil layer if the gauge pressure at the bottom of the tank is to be $8.5 \times 10^4 \mathrm {~Pa} \text { ? }$

As Shown in the Figure,a Large Open Tank Contains a Layer