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AP EAMCET202318 May 2023Morning ShiftPhysicsThermal Properties of MatterActual

The heat energy released by water of mass 2 ~kg when it is cooled by 10^ C is (Specific heat capacity of water =4200 ~J ~kg ⁻¹ ~K ⁻¹ )

Options

  1. A42000 ~J
  2. B21000 ~J
  3. C63000 ~J
  4. D84000 ~J

Correct answer

D. 84000 ~J

Step-by-step solution

Mass, m =2 ~kg Temperature, T =10^ C Heat capacity, c=4200 JKg ⁻¹ ~K ⁻¹ Heat energy is given by aligned & Q = mc T =2 10 4200 & Q =84000 ~J aligned

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