Recent content by xmedium

Im watching now someMIT courses ... is there something similar for this coz I don't really understand what "smallest possible" Work(A) might be :)

Can someone explain to me what are differential and derivatives used for (intergrals ?) in some well known stuff from dynamics or thermodynamics: dA=Fdr or in thermodynamics PdV For example what is that dV ... why not just V. Why do I sometimes write a=d^2r/dt^2 instead of a=r(:)/t(.)...