A container is filled to a depth of 20cm with water. On topof the water floats a

Question

A container is filled to a depth of 20cm with water. On topof the water floats a 30cm thick layer of oil with specific gravityof 0.70. What si the absolute pressure at the bottom of thecontainer? For this question, from the solution given, i thought first ihad to find the pressure of the oil on the water surface, using thePatm. Then using the pressure of the oil on the water surface,find the actual Pressure on the bottom of the water. Can you pleaseexplain the whole solution? Thank you For this question, from the solution given, i thought first ihad to find the pressure of the oil on the water surface, using thePatm. Then using the pressure of the oil on the water surface,find the actual Pressure on the bottom of the water. Can you pleaseexplain the whole solution? Thank you

Explanation / Answer

Given : Water density ( w ) = 1000kg/m3    g = 9.8 m/s2 Oil density ( o ) = 700kg/m3 Atmospheric pressure ( PA ) = 1.013 *105 Pa     The pressure of the oil on the watersurface     P = PA + (o g h oil )    The actual Pressure on the bottom of thewater    Pbottom = P + (water g h water ) Solve it Atmospheric pressure ( PA ) = 1.013 *105 Pa     The pressure of the oil on the watersurface     P = PA + (o g h oil )    The actual Pressure on the bottom of thewater    Pbottom = P + (water g h water ) Solve it

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