How to find composition using Specific HEat

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Discussion Overview

The discussion revolves around the problem of determining the composition of a mixture based on its specific heat capacity. Participants explore the theoretical framework and mathematical modeling required to solve this inverse problem, particularly in the context of mixtures of different materials.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested, Homework-related

Main Points Raised

  • One participant questions the feasibility of finding the composition of a mixture with a specific heat of 800, given two materials with specific heats of 850 and 750.
  • Another participant suggests that solving this is an inverse problem, requiring a model that relates specific heat to composition and the specific heats of the pure materials.
  • A different participant provides a specific example involving copper and iron, with their respective specific heats, and asks for guidance on solving the inverse problem to find the composition of the mixture with a specific heat of 780.
  • One participant responds dismissively, indicating that others should not expect direct assistance in solving the problem and should work through it independently.

Areas of Agreement / Disagreement

There is no consensus on how to approach the problem, with some participants proposing models while others express skepticism about providing direct solutions. The discussion remains unresolved regarding the specific methods to be used.

Contextual Notes

Participants have not established specific assumptions or models for the relationship between composition and specific heat, leaving the discussion open-ended. The mathematical steps required to solve the inverse problem are also not detailed.

noobatphysics
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IS it possible?
say if the specific heat is 800
and the composition is made up of 2 materials
one which has specific heat of 850
and the other of 750
 
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Its an inverse problem.

You'd need to assume a model for the specific heat as a function of composition and the specific heats of the pure materials, and use the model equation to solve for the unknown compositions.
 
hmmm

say if it was made out of copper n iron
copper having 400 specific heat heat capacity
Iron having 890 specific heat
and the mixture had 780 specific heat capacity
^ assume the values are that
can u show me how to do the inverse problem to find the composition?
 
no one is going to show you how to do anything.

you need to figure it out on your own.
 

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