Thermodynamics expansion problem

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SUMMARY

The problem involves calculating the depth of a swimming pool that overflows when water temperature increases from 24 °C to 34 °C, using the volume expansion coefficient for water, β = 2.07 x 10-4 °C-1. The correct approach requires using the formula ΔV = βV0ΔT, where ΔV represents the change in volume, not the change in depth. The initial misunderstanding was that ΔV was incorrectly set to 1.2 cm, which is actually the change in depth, not volume. The correct calculation leads to determining the volume of the pool, which can then be used to find the depth.

PREREQUISITES
  • Understanding of thermodynamics principles, specifically thermal expansion.
  • Familiarity with the volume expansion coefficient and its application.
  • Basic algebra skills for manipulating equations.
  • Knowledge of cubic volume calculations.
NEXT STEPS
  • Review the concept of volume expansion in fluids, focusing on water.
  • Study the application of the volume expansion coefficient in real-world scenarios.
  • Practice solving problems involving thermal expansion using the formula ΔV = βV0ΔT.
  • Explore cubic volume calculations and their implications in geometry.
USEFUL FOR

Students studying thermodynamics, physics educators, and anyone interested in understanding thermal expansion effects in fluids.

xnitexlitex
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Homework Statement


On a hot summer day, a cubical swimming pool is filled to within 1.2 cm of the top with water at 24 °C. When the water warms to 34 °C, the pool overflows. What is the depth of the pool? (The volume expansion coefficient for water is 2.07 10-4 °C−1.)


Homework Equations


ΔV = βV0ΔT


The Attempt at a Solution


I set ΔV equal to 1.2, plugged the numbers in, got 193.24 cm3 for the volume, and took the cube root of the result for the depth. That didn't work. What am I supposed to do?
 
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Hi xnitexlitex! :smile:

ΔV is not equal to 1.2.
1.2 cm is the change in depth, not the change in volume.

How did you plug your numbers in and get your volume?
Because I see no reason why you would need to take a cube root...
 
Thank you. I just got the answer now.
 

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