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150 J of work is done on a closed system, and 270 J of heat is added to the system. Does the internal energy of the system increase, decrease, or stay the same? If the internal energy changes, state the change in energy.

Respuesta :

onyebuchinnaji

The change in the internal energy of the system will increase.

The given parameters;

  • work on the system, w = 150 J
  • heat added to the system, Q = 270 J

The change in the internal energy of the system is calculated by applying first law of thermodynamics as follows;

ΔU = Q + w

where;

  • ΔU is the change in the internal energy

ΔU = 150 J + 270 J

ΔU = 420 J

Thus, the change in the internal energy of the system increases.

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