anonymous
  • anonymous
When a 3-kg iron skillet is heated on the stove, it becomes hot very quickly. When 3 kg of water is heated on the stove it heats up slowly. What is the reason for this difference? Support your answer using 3 – 4 complete sentences.
Physics
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SOLVED
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
chestercat
  • chestercat
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anonymous
  • anonymous
@Michele_Laino
anonymous
  • anonymous
@KyanTheDoodle
anonymous
  • anonymous
@cramos725

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Michele_Laino
  • Michele_Laino
let's suppose to heat the same mass of water and iron, namely M=3 Kg of iron and M=3 kg of water Let's suppose furthermore, that the temperature difference is the same, say \[\Delta \theta \]
Michele_Laino
  • Michele_Laino
then the quantity of heat absobed by iron is: \[\Delta {Q_{IRON}} = {c_{IRON}}M\Delta \theta \]
Michele_Laino
  • Michele_Laino
where the quantity of heat absorbed by water is: \[\Delta {Q_{WATER}} = {c_{WATER}}M\Delta \theta \]
anonymous
  • anonymous
None of that makes sense to me
Michele_Laino
  • Michele_Laino
now we can consider the specific heat of a substance: \[\Large c = \frac{1}{M}\frac{{\Delta Q}}{{\Delta \theta }}\] as a heating rate with respect to the temperature difference
Michele_Laino
  • Michele_Laino
empirically we can say that the subsequent condition holds: \[\Large \Delta {Q_{IRON}} > \Delta {Q_{WATER}}\] from which, we get: \[\Large {c_{IRON}} > {c_{WATER}}\]
Michele_Laino
  • Michele_Laino
and keeping in mind the meaning of c as heating rate, we get your answer
Michele_Laino
  • Michele_Laino
another reasoning is: the mobility of electrons inside the iron (please think about the Fermi sea) is greater than the mobility of the molecule of water, so the heat will transmit itself more rapidly in iron than in water

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