The equilibrium state of a thermodynamic system is described by: (I) Pressure, (II) Total heat, (III) Temperature, (IV) Volume, (V) Work done. Choose the most appropriate answer:
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Question

The equilibrium state of a thermodynamic system is described by: (I) Pressure, (II) Total heat, (III) Temperature, (IV) Volume, (V) Work done. Choose the most appropriate answer:

G1 Physics · Accepted Answer

Step 1: A thermodynamic state is characterised by state variables, such as pressure P, volume V and temperature T. Step 2: Heat Q and work W describe energy transfer along a process; their values depend on the path between states. Step 3: Consequently 'total heat' and 'work done' are not state variables describing an equilibrium state. Step 4: Select (I) pressure, (III) temperature and (IV) volume. Final answer: (D) (I), (III) and (IV) only.