I wonder if, years from now, sentient AI will emerge or humans will start having their intelligence augmented with stuff like implants, and the educational side of UA-cam (and the internet as a whole) will experience a renaissance...
Well, I would say ΔU = q + w, probably because I'm using a different sign convention than you are. But yes, the first law of thermodynamics always holds, including for heating liquids.
Yes, the sign of q will be positive when a liquid is heated, because energy is transfered into the system in the form of heat. (But q always shows up with a positive sign in the first law, ΔU = q + w.)
Dr Stuart is excellent instructor.
Oh man, that sign convention of heat and work always tripped me up a bit in thermo class!
I wonder why the academic channels which explain concepts in depth go underrated on UA-cam.
Probably for the same reason that novels sell more copies than textbooks. It takes much more work to follow a lecture than to watch a music video.
You can say that again...
He is one of the best
I wonder if, years from now, sentient AI will emerge or humans will start having their intelligence augmented with stuff like implants, and the educational side of UA-cam (and the internet as a whole) will experience a renaissance...
YOU EXPLANATION IS AMAMZING .
Thanks!
Sir if we heat an liquid and as a result volume increases.thus we can say that the ∆u=q-w.
Since +q is because of transfer of energy into the liquid.
-w is because of the expansion of liquid when heated.since w=-Pext . (∆v),vf is greater than vi as it is expansion process.so w =-p∆v
Is it correct sir?
Well, I would say ΔU = q + w, probably because I'm using a different sign convention than you are. But yes, the first law of thermodynamics always holds, including for heating liquids.
Yes, the sign of q will be positive when a liquid is heated, because energy is transfered into the system in the form of heat.
(But q always shows up with a positive sign in the first law, ΔU = q + w.)