Does Work Equal Total Work + Internal Energy Change?

[Anonymous119]

Ok, if it says that change of internal energy is part(for example 1/3) of TOTAL work executed over system(body). Does it mean that is TOTAL work indeed sums of every single work(mechanical work+internal energy change+...) ?

 

[Andrew Mason]

Ok, if it says that change of internal energy is part(for example 1/3) of TOTAL work executed over system(body). Does it mean that is TOTAL work indeed sums of every single work(mechanical work+internal energy change+...) ?

It means that 2/3 of the work done on the system has escaped the system as heat flow.

From the first law:

Q = ΔU - W where W is the work done ON the system.

If ΔU = W/3 what is Q?

AM