Тёмный

Carnot cycle and Carnot engine | Thermodynamics | Physics | Khan Academy 

Khan Academy
Подписаться 9 млн
Просмотров 736 тыс.
50% 1

Courses on Khan Academy are always 100% free. Start practicing-and saving your progress-now: www.khanacadem...
Introduction to the Carnot cycle and Carnot heat engine. Created by Sal Khan.
Watch the next lesson: www.khanacadem...
Missed the previous lesson? www.khanacadem...
Physics on Khan Academy: Physics is the study of the basic principles that govern the physical world around us. We'll start by looking at motion itself. Then, we'll learn about forces, momentum, energy, and other concepts in lots of different physical situations. To get the most out of physics, you'll need a solid understanding of algebra and a basic understanding of trigonometry.
About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content.
For free. For everyone. Forever. #YouCanLearnAnything
Subscribe to Khan Academy’s Physics channel: / channel
Subscribe to Khan Academy: www.youtube.co...

Опубликовано:

 

3 окт 2024

Поделиться:

Ссылка:

Скачать:

Готовим ссылку...

Добавить в:

Мой плейлист
Посмотреть позже
Комментарии : 246   
@musicforever1486
@musicforever1486 4 года назад
This video was released when I was in the kindergarten
@naveedthalappil7976
@naveedthalappil7976 4 года назад
Music Forever ! Same
@darealpoopster
@darealpoopster 3 года назад
Same, I was 5!
@datsmydab-minecraft-and-mo5666
@datsmydab-minecraft-and-mo5666 3 года назад
same!
@joyeetaroy9305
@joyeetaroy9305 10 месяцев назад
I was learning how to talk than
@nihilisticalbino
@nihilisticalbino 3 месяца назад
I was 8 xD
@ninjabomberboy
@ninjabomberboy 12 лет назад
Haven't started watching this explanation yet, but I already know its going to be a shitload better then my lecturers
@TurdFurgeson571
@TurdFurgeson571 4 года назад
Don't discount the fact that by now you're hearing this information for at least the second time. Try doing things the other way next time. Watch Khan first, then go to lecture. I promise you will enjoy lecture more than you do now. You will be prepared to work with this information on a new level in class and you will likely be able to ask better questions, which will only help you understand this stuff. Perhaps that may be the source of your trouble, too, that you don't ask questions. I don't know you, but I do know that most students remain quiet and confused, and thus frustrated at their professors or the content. It seems like most don't want to look stupid in front of peers. It's okay to look stupid when learning things you've never learned before. (You're all stupid! Why wouldn't you be? You've never done this before.) Regardless of the expectations you have for yourself, I promise you your instructor is not expecting you to completely understand this stuff after hearing it _one_ time. No one expects that. For the love of who or whatever you believe in, ask questions. If you're afraid to speak up in class, send an email, go to office hours, hell do your homework at office hours. "That's so awkward!" Oh well. This is why you pay tuition, not to sit in a class and hear something once, but to actually learn the material; learning requires this work on your part though, it's an active process. That's how to use your professors, and get the most out of a mortgage's worth of student loans you're going to have. Khan is great, but realize that you had to take time out of your day to participate in your learning. Your professor and Khan are both available, but it's up to you to actually utilize the resource.
@motopilot322
@motopilot322 12 лет назад
You're animations are just fine man.. I've never taken formal physics courses, but for 10+ years now I've done my own research via books,magazines etc... Your videos by far are the most clear and to the point..your analogies are tough sometimes..but het..that's what pause and repay are for! Keep it up brotha! This is much appreciated!!
@khletus9061
@khletus9061 Год назад
10 more years have passed since your comment, how is your research going ?
@juniorphysicist4055
@juniorphysicist4055 2 года назад
The day after tomorrow is my physics exam. While revising thermodynamics , i was facing some difficulties to understand this topic. Thanks to Sal for explaining the concept in a easy way. Love from Bangladesh❤️❤️
@jiayu7597
@jiayu7597 6 лет назад
You are so much better than my thermo professor....
@MalikRizwanElahi
@MalikRizwanElahi 15 лет назад
all lectures deliverd by this HONOURABLE professor are soooooooooo nice. i like all the lectures and enjoyed. i realy appreciate wow. keep it up sir. May God give u long life to educate us
@SabbirAhmed-nw2cv
@SabbirAhmed-nw2cv 3 года назад
I was struggling to understand this. Thank you for this!
@rubaiyattasnim1297
@rubaiyattasnim1297 3 года назад
For some reason I kept getting confused about how Q1 was coming into the system and Q2 was going out. This video helped so much!
@TET2005
@TET2005 13 лет назад
Thank you sir. Your video is worth a million dollar instead of reading the boring physical textbook. As long the concepts are grasp properly, it will stay with you forever.
@anandapatmanabhansu
@anandapatmanabhansu 2 года назад
Teach forever sir
@yutongyang-b2e
@yutongyang-b2e 5 лет назад
I love captions so much...especially when I find that I can open a Chinese captions.感觉世界充满关怀
@73Datsun180B
@73Datsun180B 6 лет назад
I want to know what drugs carnot was doing, they seem pretty good!
@shohanthegreat9857
@shohanthegreat9857 3 года назад
Lmfao
@ok_computer12
@ok_computer12 3 года назад
Existential crisis.
@raiedahmednishat8883
@raiedahmednishat8883 6 лет назад
I can't thank you enough!!! SAL!!! MA MAN!!!! seriously, I was really troubled by this... I'm so grateful that youtube exists and there's a channel called khan academy
@amassad127
@amassad127 14 лет назад
All of these videos are really just incredible. I'm a sophomore engineer and I still find these videos really helpful! I wish there was some way to help you put out these videos. Really, really admirable--thank you
@annym.8170
@annym.8170 5 лет назад
amassad127 donate khanacademy.org
@ahobimo732
@ahobimo732 2 года назад
Such a great explanation. I'd forgotten just how incredible Khan Academy was.
@jamiegollings
@jamiegollings 13 лет назад
Fell much more comfortable about my Therm exam on Monday now, thanks!
@liaoyuqian4172
@liaoyuqian4172 3 года назад
It’s kinda crazy when I fully understood the mechanism behind it. It gave me that”aha!” moment. Again, I am thoroughly impressed by Khan academy
@omarkhanlilcurry
@omarkhanlilcurry 7 лет назад
why do i pay tuition
@cbear9355
@cbear9355 5 лет назад
You summed up college for me.
@amazingworld9463
@amazingworld9463 5 лет назад
Paagal
@SaeedAcronia
@SaeedAcronia 4 года назад
@@audacioustux Jesus. Poor guy just asked a question man.
@shubhaprada9423
@shubhaprada9423 4 года назад
but I feel why do I pay even to college?
@chrisscott3725
@chrisscott3725 4 года назад
For that piece of paper called a degree
@lilcote93
@lilcote93 12 лет назад
im taking this right now with a prof that graduated from MIT as well ;) thanks for all the help sal
@OpsOfCod
@OpsOfCod 13 лет назад
wow i have to say this is awesome. I didnt think i would find a video that would explain carnot cycle to a point that i would understand. Thanks man !
@zpiazza
@zpiazza 14 лет назад
these lectures should be put into number order
@williamjpiano
@williamjpiano 12 лет назад
Very comprehensive video on Thermal cycles, nice work!
@SvSzYT
@SvSzYT 4 года назад
not finished repeating it but already IMMENSLY helpful
@amritmcamc
@amritmcamc 10 лет назад
I tripped on your shit. I understood it all. thanks.
@arjuncalidas2736
@arjuncalidas2736 9 лет назад
10:13 I think as pressure is decreased, the volume is increased. You said volume goes down. But awesome work here.
@taltheking100
@taltheking100 5 лет назад
Thank you for the video! You made it all so simple to understand
@Quran722.
@Quran722. 4 года назад
Simply made too simple by khan
@khellilg
@khellilg 11 лет назад
Haaa if i had access to internet when i was a student....
@abhisekupadhyaya11
@abhisekupadhyaya11 9 лет назад
Great Video.... I would have failed my physic xm if I wasn't there....
@alijaved3356
@alijaved3356 8 лет назад
+Abhisek Upadhyaya no shit sherlock
@janmay6349
@janmay6349 8 лет назад
+Ali Javed Give him some ice for that burn
@alijaved3356
@alijaved3356 8 лет назад
Janmay Patel lol :P i had forgotten about this
@sergiolozavillarroel3784
@sergiolozavillarroel3784 5 лет назад
8:43 "I should be talking about thermodinamics not drawing" lol
@huzaifa129
@huzaifa129 12 лет назад
i would like to see such a talented professer!!!!!!!
@isadora13correa
@isadora13correa 9 лет назад
THANK YOU!
@kaif2562
@kaif2562 2 года назад
Thanks for helping me in learning it.
@therealjordiano
@therealjordiano 11 лет назад
useful engine ... .. childhood comes to mind D,:
@jdfab_ulous
@jdfab_ulous 11 лет назад
From B to C (adiabatic) process, why does Volume keep increasing since there's no change in heat transfer and there's no source / reservoir?
@arnatri1503
@arnatri1503 6 лет назад
Fabrice Vieillesse when adiabatic expansion is taking place, the piston is just allowed move out. Therefore the gas expands increasing the volume.
@cyrilsmith6396
@cyrilsmith6396 9 лет назад
Thank u so much! U r doing a GREAT work there...
@anandapatmanabhansu
@anandapatmanabhansu 2 года назад
Thankyou sir
@iknownothing35
@iknownothing35 5 лет назад
Shouldn't delta-U have a specific value considering for an adiabatic process Q = 0 always? In that example, W(AB) = 0; no work has been done. But the gas did do work considering the change in Volume... idk maybe I'm not seeing it.
@mikeb5174
@mikeb5174 12 лет назад
also, at 7:00 : im taking pchem I right now, and we do define deltaU=q+w. so qab=-wab.
@orangeinfotainment620
@orangeinfotainment620 9 месяцев назад
TYSM 🥰
@jeanbernard3469
@jeanbernard3469 Год назад
Thank you dear!
@s0m0c
@s0m0c 12 лет назад
at 10:11 Salman Could have meaned "my pressure would have kept going down and my volume would have kept going up"
@jasonpunza
@jasonpunza 13 лет назад
all your videos are very helpful. thank you!
@welcomewehavecookies
@welcomewehavecookies 11 лет назад
Thank you so much for your helpful tutorial! :D
@beyzayigit1912
@beyzayigit1912 3 года назад
ı wish ı could like it for billion times hahhah
@s0m0c
@s0m0c 12 лет назад
in both process the volume is changing going up during expansions and going down in a compresion
@ok_computer12
@ok_computer12 6 лет назад
During the isothermal expansion process, does the system simultaneously absorb heat while doing work?
@draegernaut
@draegernaut 13 лет назад
THANK YOU, i understand now
@johnpartridge7052
@johnpartridge7052 3 года назад
He sounds like Tom Hanks at 1.25x speed lol
@wings4994
@wings4994 3 года назад
Yeah lol
@bindelapranay7921
@bindelapranay7921 11 лет назад
its awesome i can learn phy very easily
@vijgenboom2843
@vijgenboom2843 2 года назад
Thank you ❤️
@theblackknight4295
@theblackknight4295 6 лет назад
I just love your videos vai,love from Bangladesh.
@milyas8817
@milyas8817 5 лет назад
Thanks khan academy👌👌All ur lactrs r v Funnt and amazing
@sgsg5903
@sgsg5903 6 лет назад
Very good thanks Very much!!
@mitch.4615
@mitch.4615 4 года назад
Brilliant video, you have helped me so much! Thank you :)
@Gahstupidcomments
@Gahstupidcomments 12 лет назад
chemistry textbooks u = q + w physics textbooks u = q - w chemistry defines w as work done on the system physics defines w as work done by the system same equation MIND YOUR SIGNS
@biswajitmarndi9146
@biswajitmarndi9146 7 лет назад
wow!!! Thanks Sal.
@ptcala99
@ptcala99 13 лет назад
shitty microsoft paint-esque program + 20 minutes = lucid explanation of the Carnot cycle....amazing!!! Thank you so much!!! I feel more comfortable with thermo than ever!
@子阳-h7x
@子阳-h7x 6 лет назад
great video! it help me a lot
@sinankuniyilathoot5188
@sinankuniyilathoot5188 3 года назад
thAnks
@Anujsingh-mo1vd
@Anujsingh-mo1vd 5 лет назад
I understood, work done by the system is transferred the heat from hot reservoir to cold reservoir.
@kinzaarif8053
@kinzaarif8053 8 лет назад
Great explanation!!keep it up
@KVI3I
@KVI3I 6 лет назад
One Question: By removing the Rocks, you have to use Work from the outside - would'nt that make the process irreversible?
@Vasu-qn6kj
@Vasu-qn6kj 2 года назад
Wouldn't that also make it redundant? I mean Carnot cycle is utilised in an engine right.. you made an engine because you wanted to do work on something.. but if you have to do some outside work to make that happen.. then you're basically doing work to get work. Doesn't make sense to me. But ofcourse I'm obviously missing something. I just don't know what that is.
@phantomj8449
@phantomj8449 2 года назад
They were actually adapted from the rotation of a train wheel, when as the rocks decrease, it indicates the axes start to have less push on the wheel (or backward resistance), closing in on 90 degrees to the forward motion of the train. Keep on going, and the wheel’s spin pushes the piston in the opposite direction, compressing the gas and then there’s the next 2 stages, completing the cycle.
@Dan.U.
@Dan.U. 13 лет назад
Appreciate ur work!
@chhavishree1359
@chhavishree1359 6 лет назад
Thank you so much
@s0m0c
@s0m0c 12 лет назад
Gracias.
@Anujsingh-mo1vd
@Anujsingh-mo1vd 5 лет назад
I understand. Work done went
@HaarisShah
@HaarisShah 7 лет назад
thanks
@DonGuzmann
@DonGuzmann 12 лет назад
first 2 mins ----> instant subscribe
@gauravsaimaddipati8356
@gauravsaimaddipati8356 11 месяцев назад
I was two years old when this video came out
@matthewheide6816
@matthewheide6816 12 лет назад
you deserve a Nobel prize..nuf sayed
@pyg1116
@pyg1116 11 лет назад
I thought you couldn't draw the line from A to B because we can't measure the system while it's in flux...or do we always assume it's a quasistatic system...or can we draw the path because the system is kept at a constant temperature?
@sukritmanikandan3184
@sukritmanikandan3184 5 лет назад
Yeah you assume quasistatic
@avestak
@avestak 14 лет назад
Hi, Love your videos, is there a way to watch just thermodynamics ones? Thank you
@glimpseofanpilgrimage5323
@glimpseofanpilgrimage5323 4 года назад
hey why the slop in the graph is more steaper at BC
@s0m0c
@s0m0c 12 лет назад
adiabatic process means isolated, so no heat transfer can ocurr,the system travels trough an isoterm and if the temperature doesn`t change for our system, neither do the Internal energy is going to change, so is constant. But in and adiabatic process the temperature of the system is not constant is not travelling along the isoterm anymore.
@MarquiseJerusha
@MarquiseJerusha 12 лет назад
beautiful!
@themeharsingh
@themeharsingh 3 года назад
Why temperature should goes down in 1 st and 2nd step if pressure is decreased and volume incresed ( if reservoir wasn't there)
@ronaldbadic9828
@ronaldbadic9828 11 лет назад
Good work.
@shootshoot
@shootshoot 15 лет назад
man you're really cranking these out, it's hard to keep up
@arjundenath8535
@arjundenath8535 3 года назад
11 years, How those videos affected you?
@Oh4Chrissake
@Oh4Chrissake 14 лет назад
How do we know that Q2 < Q1? That is, how do we know that a smaller amount of heat is transferred from the system, between C and D, than to it, between A and B?
@sciencenerd7639
@sciencenerd7639 2 года назад
wow!
@internationalgolfconstruction
@internationalgolfconstruction 8 лет назад
Can we say that the work done to the system from A to C is equal to mgh of the stones where h is the distance traveled by the piston?
@hobinsmith2611
@hobinsmith2611 11 лет назад
bcos the volume expanded that's why the temperature decreases.
@ahmedelbanna5156
@ahmedelbanna5156 8 лет назад
How is adiabatic process digrammed with isothermic process in 2D and in isothermic process T is const while in adiabatic process T is variable so there must be 3D diagram For 3 variables P&V&T
@adityakhanna113
@adityakhanna113 8 лет назад
It's a projection. The third variable is just mentioned. it's a bit messy to do 3d and 2d is understandable
@tejasgajra2731
@tejasgajra2731 6 лет назад
A graph is always drawn between independent variables P,V&T altogether are not independent i.e. if two are known ,we can find the value of the third.
@amritas2400
@amritas2400 4 года назад
Thanks a million 🙏❤❤❤❤❤
@lalox3003
@lalox3003 13 лет назад
THANK YOU SO MUCH!!!!
@kashiii2011
@kashiii2011 13 лет назад
what do you do if it isn't a mono atomic ideal gas and if we are dealing with steam...?
@vankadariprasannalakshmi5220
@vankadariprasannalakshmi5220 2 года назад
Wow😍
@nikhilkamichetty739
@nikhilkamichetty739 11 лет назад
the sound of crows cawing in the background at around 8:45!!!
@Growriginator
@Growriginator 14 лет назад
Thank's from Germany!
@bscutajar
@bscutajar 2 года назад
What I don't get is that you can easily devise a system where the piston does work when kt moves both ways. So in that case both increasing and decreasing volumes would mean the piston is doing work. So you can just add and remove the same qty of heat and have the system do work, whicb would violate the first law.
@serinmarypr7198
@serinmarypr7198 10 лет назад
thanks a lot
@mohiuddinkhan4069
@mohiuddinkhan4069 3 года назад
from 2021
@Jruciendz
@Jruciendz 6 лет назад
than...k.S thamks
@naghamghanayem298
@naghamghanayem298 11 лет назад
when it goes from D to A is there still a resevoar ?
@amritbasavaraj9146
@amritbasavaraj9146 8 месяцев назад
But how does this cycle interact with Kevin-Planck's statement that any system cannot absorb heat from a reservoir at a fixed temperature and convert it wholly into work?
@doganguler1
@doganguler1 11 лет назад
there is no reservoir from D to A as no heat is exchanged in a adiabatic process.
@erakashyap1110
@erakashyap1110 9 месяцев назад
I can’t thank you enough :)
@chaumpion
@chaumpion 4 года назад
congrats if you've just finished all 51 videos of this playlist x)
@mikeandino81
@mikeandino81 14 лет назад
So A to B is adiabatic and so is B to C? I'm sorry but isn't T2 going into the system? Or is this a system definition issue? Thanks for the video, though. Very good!
Далее
The Carnot Cycle | Thermodynamics | (Solved Examples)
11:52
ЭТО НАСТОЯЩАЯ МАГИЯ😬😬😬
00:19
LOLLIPOP-SCHUTZ-GADGET 🍭 DAS BRAUCHST DU!
00:28
The Most Misunderstood Concept in Physics
27:15
Просмотров 15 млн
A better description of entropy
11:43
Просмотров 2,2 млн
Carnot Cycle
18:01
Просмотров 25 тыс.
Noam Chomsky - Why Does the U.S. Support Israel?
7:41
De Broglie wavelength  | Physics | Khan Academy
11:20
Просмотров 449 тыс.
ЭТО НАСТОЯЩАЯ МАГИЯ😬😬😬
00:19