Internal Energy

We know about kinetic energy and potential energy, which can interchange when an object moves through a gravitational field, so let's add to that list the internal energy of the object. This gives us a new and comprehensive way to describe conservation of energy. Check it out!

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[doggis]

My textbook had a whole half a page of an unsatisfactory explanation of internal energy. Thank you for your content, it really helped! Can't wait to watch the next one.

Thanks again! :)

[raisavante]

Why are you this much good to students? Answering almost every comment and stuff!!!!
My college teachers usually mock me whenever I'm trying to ask them anything.

But thanks to you :) I am able to respect my teachers again.

[maelaniem.manaytay]

As a science teacher, I've always read and scan my books before I go to my classroom. But now, Its different already. I only watch your videos😍 Ty prof💛

[camera]

One of the most satisfying explanation

[ajinkyadeshpande]

thanks for making videos on thermodynamics Im also learning it in class.After it please make videos on periodic table and anamolous behavior of elements.Thanks Sir.

[geniusgamer]

Could you explain how the individual kinetic and potential energies change with temperature/state?

[PunmasterSTP]

Internal energy? More like 'Incredible videos that everyone should see!" 👍

[irelae]

Thank you for the video! I was already subscribed, but this video helped me out with understanding an aspect of geography (in particular, meteorology, in which an understanding of how heat and temperature works is critical)!

[sayantanbiswas]

I love ur explanation in many science Topics.Its really simple to understood.

[erin]

I think it'd be easier to understand if the formula at 2:30 was dPE + dKE = dU

[dimuthuwijesundara]

Thank you. Sir for your clear explanation

[alexcrack]

Thanks bro, now it seems to me easier

[movielife]

wow i love your videos. i have a question, what does it mean when we say heat energy of a substance is directly proportional to its absolute temperature ?

[dorodoro]

I really appreciate that you have made a lot of useful videos. I have a question. I have study thermodynamic with the book, introduction to Chemical Engineering Thermodynamics. In this book, the internal energy of a substance does not include energy that it may posses as a result of its macroscopic position or movement. And my professor said, the position and movement mean potential energy and kinetic energy. But internal energy = sum of kinetic energy + sum of potential energy, so I guess macroscopic kinetic energy and potential energy are different from the potential and kinetic energy you mentioned on the video. Please let me know if you see this comments. Thank you.

[sidraasghar]

very comprehensive and impressive explanation thankyou so much sir for uploading your incredible videos

[noname-igzd]

very useful and important information in less time thank you so much

[michaelgalario]

@prof Dave,

Just want to ask questions for clarification.

According to the Kinetic Molecular Theory "particles of matter constantly move". Kinetic Energy by definition is often defined as the energy of an object due to its motion. At a macroscopic level, we identify and differentiate Kinetic energy and Potential energy based on the observable motion of an object. Simply, if it's moving there is KE (energy in motion). Otherwise, PE.(energy at rest). However, at the microscopic level, as per the KMT, particles that make up matter move constantly, and this is where my understanding of KE and PE becomes a bit fuzzy: 1. Considering KMT - particles of matter are always in motion, does Potential Energy form really exists?

Hope you could give clarification on this.

[taiborlang]

I appreciate your ways of teaching, go forward.

[SalsaKingoftheApes]

How would you describe thermal energy? Is it the kinetic energy portion of the internal energy of a system or body? So we can say that objects contain thermal energy but not heat. Or should we just always use internal energy?

[marxregis]

Thank you sir for the excellent explanation