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Thermal expansion - why meat curls up at the corners in a pan

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Please help answer the following physics question.

This will seem like a silly question, but our homework is to describe the phenomena by which the outer edges of a hamburger or a slice of bologna turn upward when placed in a hot pan to cook.

So why does this occur? Is this a heat issue or a moisture content phenomena of the hamburger or bologna in the pan?

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https://brainmass.com/physics/circuits/thermal-expansion-why-meat-curls-corners-pan-274265

Solution Preview

Please see the attached.

Why do the ends of materials turn upward in response to heat?

Hello...

This will seem like a silly question, but our homework is to describe the phenomena by which the outer edges of a hamburger or a slice of bologna turns upward when placed in a hot pan to cook.

So why does this occur? Ids this a heat issue or a moisture content phenomena of the hamburger or bologna in the pan?

Thank you

I ...

Solution Summary

This posting helps with an electricity and magnetism problem. It discusses the phenomenon where the outer edges of a hamburger or slice or bologna turn upward in a hot pan and explains why it occurs.

$2.19