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MMLU / A confined ideal gas undergoes a cyclical process in three steps—an isobaric…

Problem

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question

A confined ideal gas undergoes a cyclical process in three steps—an isobaric step, followed by an isochoric step, followed by an isothermal step. Which of the following must be true?

choices

  1. The change in internal energy of the gas is equal to the work done during the isobaric step.
  2. The change in internal energy of the gas is equal to the work done during the isobaric step minus the work done during the isothermal step.
  3. The total work done during the cycle is positive.
  4. The total work done during the cycle is equal but opposite to the net amount of heat transferred.

subject

high_school_physics

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Source and history

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