Pressure on Bottom of Test Tube: 71.442 Pa

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Homework Help Overview

The original poster presents a problem involving the calculation of pressure at the bottom of a test tube containing two different fluids: oil and water. The subject area pertains to fluid mechanics and pressure calculations.

Discussion Character

  • Exploratory, Mathematical reasoning

Approaches and Questions Raised

  • The original poster attempts to apply the pressure formula using the densities and heights of the fluids involved. Some participants may question the accuracy of the calculations or the assumptions made regarding fluid properties.

Discussion Status

The discussion appears to be in an early stage, with the original poster seeking validation of their calculation. There have been multiple posts indicating a lack of responses or engagement from other participants, suggesting that the discussion has not progressed significantly.

Contextual Notes

The problem is constrained by the specific densities and heights provided, and there may be assumptions regarding the uniformity of the fluids and the effects of gravity that are under consideration.

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Homework Statement


A test tube standing vertically in a test-tube rack contains 2.5cm of oil (Density=0.81 g/cm^3) and 6.5cm of water. What is the pressure on the bottom of the test tube?


Homework Equations


P=F/A

P=Dhg where d=density, h=heigh, and g=gravity.


The Attempt at a Solution



P=(0.81)(9cm {2.5cm+6.5cm})(9.80)

P=71.442 Pa


Is this correct?
 
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