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Chapter 14: Q.9 (page 384)

A 50-cm-thick layer of oil floats on a 120-cm-thick layer of water. What is the pressure at the bottom of the water layer?

Short Answer

Expert verified

Total pressure is 117 Kpa

Step by step solution

01

Given information

A 50-cm-thick layer of oil floats on a 120-cm-thick layer of water.

02

Explanation

Total pressure exerted is sum of pressure exerted by oil , water and atmospheric pressure

That means

Ptotal=Po+Poil+Pwater

Po=101kPaPoil=hoilρoilgPwater=hwaterρwatergρwater=1000kg·m-3ρoil=870kg·m-3Ptotal=101kPa+(0.5×870×9.8)+(1.2×1000×9.8)P=117kPa

Total pressure is 117 KPa

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