Work, Energy, and Power: Crash Course Physics #9
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- Опубліковано 17 чер 2024
- When you hear the word "work," what is the first thing you think of? Maybe sitting at a desk? Maybe plowing a field? Maybe working out? Work is a word that has a little bit of a different meaning in physics and today, Shini is going to walk us through it. Also, energy and power!
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Produced in collaboration with PBS Digital Studios: / pbsdigitalstudios
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We made quiz questions to help you review the content in this episode! Find them on the free Crash Course App!
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This was uploaded...
...the day after my physics exam...
join the club
the same here lol
they probly didn't want the blame
MY PHYSICS EXAM IS TOMORROW PRAISE THE ALL MIGHTY GODS OF CRASH COURSE!
same herw
Let this be a lesson to all of us, if you want power you're going to have to put in a lot of work over time.
that actually helped me memorize the formula..thanks!
Same. My teacher doesn't know how to teach so thank you so much lol.
which equals exploitation.
Depends on the system...
what
Physicists have one set of definitions for these words, and the rest of the world has different definitions.
Same deal with other scientists and the words "theory" and "prove".
Hi! Completely unrelated but I absolutely love your channel, can't wait for new videos.
For me science definitions are always true , i always use hypothesis instead of theory in my life once i knew what scientific theory mean, and it makes sense.
Mappings and functions. Gross, haha.
Hey awesome videos guy, nice awesome videos
I've learned more relevant things watching UA-cam, than anything taught in school.
Same here.
G. Warren, I agree. Watch and listen again and again until you get it. Got it!
@@kennyemmanuelnaidoo4427 "I never let school get in the way of my education" Mark Twain
thats cuz u dont listen
Same here
I'm not even sure why I watch Crash Course Physics...I don't understand half of it, but I feel smart though.
if you try to read and study a bit about everything she says in parts, maybe following the same order of the series, and then watch everything again, I'm sure it will became easier. she also always say what kind of mathematical witchcraft she is using, so its easier to just go look a bit about it to make the math easier to understand.
A lot of this stuff takes repeated exposures from multiple sources. It is like anything you do, be it league of legends or math, it takes time and practice :D
I'm the same, I wish it was easier to retake my maths and science courses from school so I could actually understand these.. What grade are these videos aimed at? In the uk I only took GCSE's which we do at 16 and this is a lot more advanced than those, oh and it was nearly 20 years ago so I don't really remember much either!
What she is doing is basic mechanics, so it's the stuff you do in 7th grade
TSLNC04
No, not in the US but in Germany. but here e.g. calculus is also mandatory curriculum in the 11th and 12th grade
Lots of stuff going over my head and that I will forget. But I love listening to a lesson and not being forced to understand it. I can just marvel at the wonders of science and appreciate all those scientists with brain capacity well over my own. Thanks for making the world better with electricity, internet, smartphones and antibiotics.
Uhm...
What?
They don’t have greater brain capacity than you, they’re just more patient and don’t give up when they’re frustrated.
Studley De Muffin agree but he needs to study.
I WAS LITERALLY STUDYING THIS RIGHT NOW.
Thank you very much
You're very welcome :)
-Nick J.
To salt mines you go :)
OMG JINGLES I JUST WATCHED UR LASTEST VIDEO AND CAME TO THIS AND HERE U REPLY WTF WTF. OMG OMG . UR FAMOUS MAN. I SUBCRIBED TO U SINCE UR FIRST VIDEO. OMG JINGLES
+CrashCourse OMG AND CRASH CROUSE REPLIED TO JINGLES OMG OMG OMG OMG
+Stephen Mcfeeley DAM THATS NOT JINGLES
I'm so annoyed by the state of that Rubik's cube
Ahh Yeahh
ocd fellow
Muji Paracha that's entropy to you
Muji Paracha that bugs me too. I hate when I see things left like that.
OCD
I love how you blend the colors of the squares when solving an equation! Great work ThoughCaffe
I too loved that!
-Nick J.
I learned physics in German
Now I have to translate everything in my head to follow
Ich auch, aber ich finde dadurch, dass sie alle Fachbegriffe nochmal erklärt kann man sich ganz gut dran gewöhnen
Suh
Your videos are really helpful for reviewing some of the important concepts a day or two before an exam. Trust me if I would've watched this video without learning the chapter at a slower pace in school I would definitely feel lost😂😂. But thanks to your videos I've developed a lot more confidence than before. You are great teacher.THANK YOU
0:07 is that rihanna on the wall hahahajahahahaha
Marah you’re awesome lol I didn’t notice
Marah Great f'ing eye!
I learned more in 10 minutes than i did in 3 weeks of physics. This would’ve been great to have before the unit. The explanation even uses past equations so i can remember them. Thank you
this series is so well explained!!
I cant wait to see how you tackle electricity and magnetism
Okay. Thank you so much. Today was coincidentally the day when my teacher started this chapter in school and I come home to this video while surfing YT. God bless!
Really love the simple and AMAZING explanations. Can't believe a boring physics lecture in school turned into a really fun YT Physics Crash Course. 11/10 would recommend.
Watt is power?
Watt is effect. WAs it a bad joke or a question?
A bad joke
Ryan Cerny How about you find out by doing your WORK?
Ha!
smh
This UA-cam channel literally help me in every school assignment no matter what I choose. Whether it’s history or science I always find the answer
My god... her accent... i'm in love...
Peterson C. A
Love how she stays in the subject, managed to understand most of my Uni physics classes!
This was a really good input. Once again, it is fantastic to explore the equations and how they describe the same concept using different terms. It is 100 times more engaging than dull mathematical exercises.
Looking forward to the course on power and electricity!
This video series is a great introduction to the fundamental principles of mechanical engineering, very well done!
These are amazing! The presenter does a GREAT job. Please keep making them. It would be great to have a Calculus Crash Course as well.
twinkle twinkle little star, power equals eye squared are.
radicalbacon genius.
P = I^2 × R you say?
Let's see...
P = VI
Where V = IR
Putting the value of V;
P = I*I × R
Hence proved.
radicalbacon ewww
radicalbacon I'm going to remember that for my exam
The way they do those animations with the equations is so beautiful and helpful.
work for people ---> job
work for physicists ---> science
work for me ---> rihannas song
work for me -> a nightmare xD
work for me -> science
Only work for me -> Eating
work work work work work
yah
"You're basically a light bulb!" That was so funny! XD Don't know why...
I absolutely love the pedagogical approach in this course. Wonderful stuff!
You teach better than my AP teacher
it's easier to learn something the second time + they're reading off a script
Who here is cramming for a physics exam tomorrow?
PBS was very smart to endorse it! It is one of my fav topics on my fav educational channel. Also I invented insta travel based off of Breit-Wheeler process. Hopefully they will talk about it one day!
I love the way she puts it! I've never thought about it quite like that before. Awesome!
I have a BS in Physics but it is well past its "use by date" (the 1980s were a long time ago) and I enjoy these videos. Great little reminders of what I worked so hard to learn.
Love the subject, love the humor, love the presentation. ...Great video!!!!!
This was one of my favorite subjects in physics class.
I love ur teaching as it never gets boring and the diagrams are clear and easy to grasp.. Thanks for making all this freee
I've been watching A LOT of physics videos and couldn't understand until i found yours, thank you very much❤️❤️
i guess this is my favourite series of crash course!
NICE! :)
CrashCourse damn! didnt expect a reply! but tell john that world history was super awesome too ;)
Will do!
-Nick J.
Thank you so much, you summarized everything I've been "trying" to learn for the past month in a 9 min video. You're the best!
these are the best physics videos I have ever seen. she's wonderful and also the one who's doing these editing pics stuff
This video is really helpful!
I couldn't understand this topic even after 3 times revision, but just a 9 minute video did alot!
The puns are strong in this one haha
No!
tbh when the test is in one minute and your watching this, like no joke, help I didn't study
Oh, did it go well?
She is truely amazing, awesome video as always, loved every second!
The explanation of convection and thinking how the position of the heat source can prohibit convection was the neatest part of this
The animations are stunning 💜 I wonder what they use to create such beautiful graphics. 😁
I'm procrastinating my physics assigment to watch Crash Course Physics. Just kidding, who would do that. I'm just a construction worker. Love the series even though I feel like a 6 year old while watching this.
You do realise construction works need physics too
Mohammad Hamzah You don't need to be of higher intelligence to clean up rubble and put concrete on the ground.
Karadra Peterson I didn't mention higher intelligence, I mentioned physics like the basics.
Mohammad Hamzah Haha! Bruh, what I do. You barely even need basic arithmetic.
@@Flameandfireclan that surprises me
The graphics of ur videos r so... Amazing. The teachers clarify everything in less amount of time effortlessly... Also your channels contain vedios for almost everytopic....
Cheers ☺️ to one of the best channel
Guys u r doing a great work thanks a lot
Wonderful video! Reminded me so much of what I've forgotten from collage. I wish these videos existed when I was going through school.
Work work work work work
High five for Mel Brooks reference! 8-)
thank you was looking for this comment
YOU ARENT WELCOME HERE
Lol.. thank you...I was looking for this comment.
Rihanna
actually speaking, i love it ,simply love it :)
God I love this channel. It's a great review, but being out of school for a while I now have a genuine interest in learning as much as I can.
it was really helpful! thanks you taught me (a compilation of other vids too) what my teachers could not teach me in 2 years. Thank u❤️❤️
Perfect video
Wow! Thanks :)
lol, 9 minute video, posted 3 minutes ago.... 2 minutes ago you comment "perfect video"....
+Nolansykinsley intriguing
Watched it at 2x speed?
+CrashCourse this video is missing from the crash course physics playlist!
Due to the pandemic, my physics teacher told us to watch this video in place of a lab.
I wonder how is it that easy for you to provide that much of information in a short time! Thank you :]
These vids got me a 97% on my physics test boi. Best vids keep doing them cause u deserve more subs.
Very informative and detailing.
Really well made!! Thank you for your input and energy. But what a shame to miss a lot because it is way too fast!
I just want to say I love everyone who worked on this. I'm in AP Physics right now and my teacher isn't the best at teaching (she would be better at the middle school level. She had=s the enthusiasm but lacked the ability to teach mathematical concepts). Your required to have either completed calculus already (like me) or be in the class right now (about half the class), so that means that means when it comes to some of the math, it's some kids first time seeing it. Yeah, not good.
Anyway, what specifically made me leave this comment thanking you is that you actually called it an integral. Both my teacher and the text book have been dancing around the word because it hasn't been explicitly taught in class; and I have been ready to rip my hair out because I just wish they'd call it what it is. So thank you for keeping me sane.
I see this channel becoming the complete future of High School Education - I learned more in this video about Work than i did in a whole year back in GCSE's xD
who else is watching this the day before exams ?
I need some energy to I finally get to work and get the power I deserve
Or you could just have a Red Bull
+Frank Schneider lol this comment section is surprisingly funny
Awesome! I've been waiting for this 😊
Great video, perfect revision for my GCSE physics
0:08 i actually have a history exam right after my physics exam tomorrow
She explained better than my physics teacher 😂
i had a huge test and i hadnt revised all of my work so this rlly helped me out ty btw i passed the test
"Are you thinking about it? Good!" :D Love all the annotations (and puns) in this video!
Only gay people like those kind of puns
The day after I have my work and energy test...
Is anybody watching this in 2020?
Very good
this was really great!!! thanks for the insights
This is so informational. Thank you so much!
Tomorrow Physics Exam!!Hope this will help!
when i say work what's the first thing that comes to your mind ?
me: RIHANNA
I'm really looking forward to when they do voltage, resistance, charge, current, etc. !
Another CrashCourse physics vid!! Hell yeah.
I know all this stuff but I come and like just to support the channel :)
Adam Smith that's just bcoz the way they present..........😊😊😊😊😀😀😀😀
good for you
Love this host.
I love this series!
Excellent presentation! Consider your work absorbed!
Symmetra is that you???
Lol xD
hahaha. She's actually too skinny but good call
"You're basically a lightbulb!" lol
this is the best physics video I've ever watched
Beautiful representation, content and presenter. Thanks.
thanks to you, I ruined my pen.
3:08 iight imma head out
My fave crash course video - bets explained but it stands out due to the rihanna reference at the beginning
Good work. Its really helpful. Bravo!
Oh jeez. I was living in blissful ignorance until you brought up exams :(
work work work work work
you see me doing work work work work work work
lalalanananannanannananan
physics
Great! I liked your way of presentation.
You're an awesome teacher! Thank you
physicssssssss
yesssssssssss
-Nick J.
+CrashCourse Lol
+CrashCourse Lolllll
Ha!
'Physics, physics, physics, phyyysssics, physics physics physics phyyysssics.'
-The Doctor
Finally we start getting into real physics.
But you forgot to mention the gauge invariance of gravitational potential energy i.e. you can set its zero to be wherever is most convenient.
...but isn't it obvious from their shaky assumption that the floor will hold? I never trust the floor.
but that will introduce the possibility to have negative potential energy. People's head will explode!
+assalane late
because forces are not real physics... dude, please.
***** When I think of physics, I think of momentum, energy, fields, and sources (mass, charge, etc). To me, forces are just a tool for practical use, not anything meaningful.
She is amazing! 😱 Loved this explanation.
I still remember learning that P=F*v when I was taking a lesson on aerodinamics in a Fluid Mechanics curse after the teacher stated that the power to keep a plane in flight was the Drag force times the velocity of flight, that was a really interesting thing I had never though before
0:07 is that rihanna on the wall ?
Oh my god yes 😂😂😂😂👌👌
I hate physics so much
I looove this.... Well, it's alot of information in a few minutes, probably this explains the name of the channel, Crash course. Thanks though team crash course.... This z great work, great set up, great illustrations.... Keep it up. As an owner of a tutorials UA-cam channel, I'm greatly inspired to up my game too.....