Relation Between Internal Energy Work And Heat

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Relation between internal energy, work and heat.
Work:-
Physical effort or activity directed towards the production or accomplishment of something is known as work.
Work is a path function and not a state function.
In an adiabatic process change in internal energy
s
Change in internal energy of a system can be done by transfer of heat from the surroundings to the system or vice-versa without expenditure of work. This results change in temperature called heat change.
The transfer of heat is done through thermally conducting walls instead of adiabatic walls.
In this case change in internal energy
The change of state is brought about both by doing work and by transfer of heat.