So, I'm working on my physics homework and so far, in reading all the explanations, have come across so many different equations (all for energy). I've tried to tie it all into one equation because I just never know which one to use or what to include, etc (and have looked in FOUR textbooks already).
So, these are the equations I've come across in different explanations: **deltaE=W ( and then from this they turned it into deltaKtrans+ deltaEinternal= FdeltaX ) **Ethermal= Q + other **deltaEsystem= W+ Q + other energy transfer **deltaE=W **Work (non conservative) = delta E= delta Kinetic energy + delta Potential energy
So, whenever It's an energy problem, my first instinct is to use the "Work(nonconservative)= delta Kinetic + delta Potential" but sometimes that won't be sufficient...when they introduce things like Einternal and Ktranslational.
Would something like "delta E system = transferred energy" work for all problems? Where Delta E system = kinetic, potential, and internal energy? and energy transferred = Q + W?
Also, what even is the difference between E system, E internal, and E thermal. And is Ktranslational part of the system's kinetic energy or the internal energy or??
Can you see I'm really confused? I've tried reading from four different textbooks already and gone to office hours but no one has any concrete answer as to HOW I'm supposed to know which energies are involved in a problem & which equation I'm supposed to use / which variables of an equation to ignore??
Sorry for the long question, but can someone PLEASE help me.