Hey guys, I'm having a problem in understanding the 1st Law of Thermodynamics.
If i would increase the pressure of a closed system by compressing a gas in a cylinder isothermal, the 1.Law states, that all the work i put in to the system, i get out by heat.
So my 2.state would be the gas at the same temperature (same internal energy), but compressed (at a higher pressure).
But isn't this compressed gas able to do more work, than the not compressed?
If i drilled a hole in the cylinder my high pressure gas could do some work.
Where does this energy come from, since all my input energy i put in by work, came out in form of heat?