In thermodynamics, heat and work are : (1) Extensive thermodynamic state variables (2) Point functions (3) Path functions

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In thermodynamics, heat and work are : (1) Extensive thermodynamic state variables (2) Point functions (3) Path functions (4) Intensive thermodynamic state variables

Anonymous · Accepted Answer

The correct answer is option 3) path function

Doubtly AI · Answer

Answer: (3) Path functions Heat (Q) and work (W) are energy in transit. Their values depend on how a system goes from one state to another (the path), not only on the initial and final states. For example, the work done by a gas between the same two states is different for an isothermal and an adiabatic path (it is the area under the P–V curve). Quantities like internal energy U, pressure, volume and temperature depend only on the state, so they are state (point) functions. Heat and work are therefore path functions, not state variables.

In thermodynamics, heat and work are : (1) Extensive thermodynamic state variables (2) Point functions (3) Path functions

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