PHY.3:4.4 - Derive the consequence with every remaining physical change included

Carry the quantities, signs, state conditions and input relations through the chosen comparison. Interpret each term by the physical contribution it represents. Check that the canceled effects have compatible units and conditions, and that the uncanceled effects describe the complete remaining process.

Obtain the requested inequality, an excluded transformation, or the unresolved condition on which either result depends. When using a mathematical invariant, MATH.11 supplies the derivation from the admitted transformation rules. When a numerical tool performs the algebra, retain the symbolic relation or a sufficient explanation that lets another participant inspect what the computation establishes. C.29.2 and C.29.3 govern a computation whose formulation or realization needs further work.

Distinguish a necessary bound from attainability. A proposed device can satisfy one physical restriction and still fail another, or approach a theoretical limit only as time or another resource grows. The useful output at this step says which candidates have been excluded, which remain under consideration, and which premise or construction controls the next question.