anonymous
  • anonymous
The specific heat of gold is 130 C/kgK. How much energy would be required to raise a 200 gram piece from 22 deg C to 30 deg C?
Physics
chestercat
  • chestercat
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Michele_Laino
  • Michele_Laino
here we have to apply the subsequent formula: \[\Large Q = cm\Delta t = 130 \times 0.2 \times \left( {303 - 295} \right)\] since 22 °C degree coreepsonds to 295 K and 30 °C degree corresponds to 303 K
Michele_Laino
  • Michele_Laino
200 grams corresponds to 0.2 Kg
anonymous
  • anonymous
ok! and so we get 208?

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Michele_Laino
  • Michele_Laino
yes! and the right unit of measure is Cal or Kcal namely we have: 208 C or 208 Kcal
anonymous
  • anonymous
ohh ok! yay so that is our solution? :O
Michele_Laino
  • Michele_Laino
yes!
anonymous
  • anonymous
yay!! thank you!!:D
Michele_Laino
  • Michele_Laino
:)

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