text: need help with thermodynamics? could someone pls explain the 2nd law of thermo like the tricks to it especially where it has to do with entropy and the carnot cycle. i know u need a diagram and all i ve revised it a bit so if u use words i wld understand. thnx in advance the below link uses the helpful 'waterfall analogy'. it shows you that your only able to extract the energy that is available to you. check it out. it is pretty clear.