Thermodynamics - A-level Physics
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- čas přidán 8. 07. 2024
- scienceshorts.net
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00:00 1st law of thermodynamics
05:28 p-V diagrams
08:30 p-V loop
09:56 Otto cycle -
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Got my A levels result today. Got an A in physics, B in maths and a D in Computer science. I owe you that A in physics. Thank you for your content!
advice for physics
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This is helpful for my chemical engineering degree lol not just physics A level. Cheers prof
I got a gcse physics paper tomorrow im just interested...
gaming hats did you do aqa gcse Physics paper 1 too? How did you find it?
@@louispride7695 it was okay I just hope paper 2 wont be hard because I really don't get electromagnetism c:
gaming hats yeah it’s pretty hard but just keep rewatching freesciencelessons
Literally same hahaha
I dont know how to reward you.
People who Explain theory are just as much respectful as the ones to Invent it !!
At least to me.
Not sure if you are aware, but lots of IB students are also huge fans of your channel and we have paper 3 on the engineering part next Monday. I am so glad that I can have these vids before my exam. Thanks!
watching this for engineering option rn lol
I would like to thank you very Much, Mr. Rees for keeping up the good work !
Thank you so much for uploading this!
this is the most clear and amazing general axplanation and introduction on thermodynamics that i have ever seen in my thankyou so much yu motivated me to to learn it
Thank you @Science Shorts for doing a kind gesture for all A-Level students. I had no hope for Physics but after discovering your channel, I watched every video which will come out of the exam. You gave me hope in doing Physics A-Level. I have just done the Physics A-Level P4 at Thursday and awaiting for the results. Thank you for your dedication and Keep up the Good Work. 😁😁
How were your results?
what's your result?
Great illustrations & Explanations love it!
I appreciate you. I saw all 4 videos in the sequence and the way you started and developed the concept in such a constructive way, that is great. Thank you for such wonderful explanation.
Amazing very helpful im just about to attempt a whole lot of questions
Can you make the whole of the engineering option module including rotational mechanics and flywheels etc
Just in time for my First Year Exam at uni. Legend
Do you think you could go over the differences between the four stroke petrol engine and a diesel engine? My teacher went over it and I have a basic understanding but I reckon you'll be able to explain it a bit clearer. Thanks
great work ❤
I have a question, for the four stroke engine, why is the temperature higher in the expansion?
please can you also do efficiency and the heat pump/refrigerator
a good way to enhance my listening!!!
You're the best! TYSM
hi there is there a more detailed video on AQA otto cycles I feel like some bits are missing that was told to me in school
can you do one on heat pumps/refrigerators and efficiency?
can you please do a video on atom classification before next monday (physics paper 1)?
I’m just a 15 years old girl and English is not even my first language, but your explaining everything so clear that I’m understanding lots of things (not everything ofc). Thank you!!!
Why does isothermal compression happen at constant temperatures and why does the volume decrease and pressure increase? Also at a colder temperature I understand that the gas expands less but is that why the volume is lower?
hey at 8:34, work is DONE BY the gas when the volume goes up right? the gas doesn't do work?
do we not consider the heat loss to surroundings for the 1st law?
hi what if the gas is changing state? will deltaU = 0? as it depends on PE as well?
Thank you for being honest about hating thermodynamics
Can we watch your videos of explanation and past papers for CAIE alevel?
@Science Shorts
Hi, I have a question. If pV/T = constant, how come decreasing the temperature increases the p and v? Due to the equation, shouldn't it be the other way around?
Thanks.
Er, increasing temperature increases pressure!
Science Shorts yeah I’m not going to lie I was having a mental spasm when asking that question 😆. Thanks for the clarity and quick reply, however :)
hi, i have my a level phyics paper 2 on friday but i was just wondering do we know to know all of this for AQA specification? because when i was covering thermal physics earlier this year, i've not come across any of this except from the basics of the first law of thermodynamics
Only for Engineering optional module
is this in the OCR A spec
fine!👍👍👍👍👍
If you dont mind me asking, what degree did you do uni?
Physics.
@@ScienceShorts where from?
I'm really sorry... at 9:44, I don't understand why he has shaded the whole thing in for when work is done by the gas, but only the bottom section for when work is done on the gas. Can someone explain please?
Inside loop is net work done by gas. As in: total work done by it minus work done on it.
Do we need to know these for AQA physics alevel?
That's what I was thinking as well, I haven't learnt this yk. I don't think we have to learn the graphs, but we do have to know the first law of thermodynamics and the work done by expanding gas.
i dont think you need to do this unless your school is doing engineering physics for the option module. not entirely sure
Subbed
you said w=pdeltaV only applies for constant pressure but at 6:48 you use the same equation when p is changing? Why have you used this here?
canWe write the first law like this too?
Plzz reply
Increase in internal energy= energy supplied by heating + energy supplied by doing work
Sorry for late reply. So basically U=q+w. Here w means work done ON the system.
So the first law of thermodynamics would be: The internal energy of a system equals to the sum of the heat supplied and the work done on the system
If you’re rearranging the provided formula, it would be U=Q-W
great vids thanks a lot. Btw i dont think this is in AQA A Level physics (non-engineering)
It's in the optional module.
what about diesel engines?
Hi Sir, is Q=U-W required knowledge for standard A Level? (Non-engineering physics)
its not in any of my textbooks
it's the same thing except when gas is compressed (work is being done on the gas) which is negative
@@shneurjayson3020 yeah it mightn't be but it can appear in the exam.
Are you doing more kahoots soon?
He won't.
me who have had physics for 5 months in highschool trying to understand all the stuff i have not learned in school
Isn’t this in an optional module?
Ok thanks
The first part is useful for thermal physics though
Hi love the video however i didn't think the laws of thermodynamics were on the AQA spec
Engineering optional module.
You're special
I owe you a beer
3rd
Medical physics?
Isn’t the equation for 1st law of thermodynamics U = Q+W ?
muhammad Ahmed, it is, but don’t forget that in your equation W is work ON gas, but in video W is work BY gas. There is an equation W’=-W, here W’ is work by gas, W is work on gas.
Woah! Thanks@@matthewmaksimov
2nd
in adiabatic conditions why is the pv graph closer to minimum pressure? Explanation
Because the temperature decreases as it expands.
First
Nice, but I still need further explanations. Pls
im scared
How is this A-level?!, Ive looked in the textbook and the specification, and most of this is NOT on them. I am talking about AQA here, pls comment if this is just AQA
This is in the Engineering Physics optional module for AQA A-level Physics.