A 2 kg body of specific heat capacity 4200 J kg^-1 K^-1 is warmed by 10 K (no work done). The increase in its internal energy is:

  1. 84,000 J
  2. 42,000 J
  3. 1.68 10^5 J
  4. 8400 J
Answer

A) 84,000 J

Delta U = mcDeltatheta = 2 4200 10 = 84,000 J. SLO P-11-C-12 · Understanding

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