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1.What is the specific heat capacity of granite when 20 kg absorbs 237 000 J of heat energy, causing its temperature to increase by 15 °C? (you are finding c)​

Respuesta :

Given :

  • Amount = 20 kg
  • Heat energy absorbed = 237,000 J
  • Temperature change = 15 °C

Formula applied :

[tex]\boxed {Q = mc \triangle T}[/tex]

  • Q = absorbed heat
  • m = mass
  • c = specific heat capacity
  • ΔT = temperature change

Let's solve for c !

⇒ 237,000 = 20 × c × 15

⇒ c = 237,000 ÷ 300

⇒ [tex]\boxed {c = 790 J kg^{-1} K^{-1}}[/tex]

∴ The specific heat capacity of granite is 790 J kg⁻¹ K⁻¹.

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