Coulomb's Law | Electrostatics | Electrical engineering

Coulomb's Law | Electrostatics | Electrical engineering | Khan Academy

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9 жыл бұрын

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Sal explains the fundamental force that causes charged particles to attract or repel each other.
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Electrical engineering on Khan Academy: A summary of the math and science preparation that will help you have the best experience with electrical engineering taught on Khan Academy. Become familiar with engineering numbers and notation, and learn about the two most important electrical quantities: current and voltage.
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Пікірлер: 440

@nnennan.8615 19 күн бұрын

you just save my life, thank you

@tinius7mosvold807 4 жыл бұрын

Your back must be in so much pain. Literally carrying everyone's education. Thank you

@nathanielcruz4364 2 жыл бұрын

I know Im asking the wrong place but does someone know a tool to log back into an instagram account..? I was dumb forgot the login password. I appreciate any tips you can give me!

@tinius7mosvold807 2 жыл бұрын

@@nathanielcruz4364 reset password using the website ?

@sanchi7410 2 жыл бұрын

Ikr

@JenniferPChung Жыл бұрын

Seriously!

@haxboi5492 10 ай бұрын

@@nathanielcruz4364fed

@oshkosh7 3 жыл бұрын

I think a lot of teachers teach as if we should already understand it before they teach it or think that everyone should get it the first day. It’s just really draining to deal with tbh. That being said, this video is great 😭😭

@Its_ShaniaNcl 3 жыл бұрын

Yes. Our physics teacher doesn't really teach physics but biology. Now he just lets us study on our own and gives assignments without lecturing anything. And he gets paid like that.

@PikanAnimations Жыл бұрын

@EpsilonLovesSharks Жыл бұрын

@Shania Nicole Ruiz sounds exactly like my physics/biology teacher except they're actually clueless about maths

@TheCrazyVlogger Жыл бұрын

6 hour lecture today and this man explained it better in 11:50 minutes. literally thought me everything since grade 3 and I'm in uni now

@Leaper1150 6 ай бұрын

blood in uni and can't spell taught💀 (no hate)

@ds-bv6tj 5 ай бұрын

@@Leaper1150 blud corrects other people on spellings and says blood instead of blud💀

@Leaper1150 5 ай бұрын

@@ds-bv6tj It was auto correct

@ds-bv6tj 5 ай бұрын

@@Leaper1150 ain't no way😨

@idanzak1999 Жыл бұрын

WOW

@annelou6082 3 жыл бұрын

thanks

@lo.maki7581 2 жыл бұрын

aaaaa thank you so much

@SukhvirDithoniya 4 жыл бұрын

Very good

@funnyvideos1030 7 жыл бұрын

Just wanna say thanks for saving millions of students from certain bad grades!

@The.Golden.Door. Жыл бұрын

Quantum Gravitational Electricity

@nicoleangelica7164 4 жыл бұрын

Coulomb's visiting me in my dreams

@Jody-gc7rm 3 жыл бұрын

😆😆😆

@Kaijomo 3 жыл бұрын

Same, I just can’t get those lush curls out of my head

@sudipbera9747 3 жыл бұрын

Man it's creeping me out the way he is staring.....

@Nevershoutnever3113 5 жыл бұрын

Y’all been saving my ass from sophomore year high school to today, sophomore in college. Thank you Khan Academy! Lol.

@iconsumedmt1350 4 жыл бұрын

Sophomore in college? Maybe for math but khan academy has only put out high school and entry level college (basically ap) physics videos.

@FBRaptor 4 жыл бұрын

@@iconsumedmt1350 yeah that's what i've been wondering. I mean, i believe that this is a sophomore high school level topic

@juanfelipe8484 3 жыл бұрын

@Aristides Gonzalez definitely, I’m going over it down

@Luanda941 2 жыл бұрын

@@iconsumedmt1350 exactly I am preparing for a medical exam in india which needs high school level physics chemistry and bio. And the competition is too high over here. For my category atleast. I am starting from electrostatics and honestly khan academy has saved me from very hard topics such as fluid mechanics as well.....

@Luanda941 2 жыл бұрын

@@iconsumedmt1350 I was here for relationship b/w oscillations and coulombs Law.. but disappointed me couldn't get a video on the topic...

@KayeBetacora Жыл бұрын

Par salamat 😭🤍 gets ko na HAHAHAHA exam ko mamaya salamat sa iyong basbas

@kbd423 6 жыл бұрын

Oh God, Coulomb stop looking at me!

@BMeena-mw3bt 4 жыл бұрын

Ha hahaha

@cryingcat5444 4 жыл бұрын

damm that just makes it creepy

@aumalik6306 4 жыл бұрын

🤣🤣🤣🤣

@rogerhu9047 4 жыл бұрын

Yes, he is looking at you if you can solve his formula!

@ujjawaltripathi7462 3 жыл бұрын

@brandonthesteele 8 жыл бұрын

My E&M prof doesn't lecture very well. I'm going to be leaning on you a lot, Khan academy.

@kaaynn-rn 4 жыл бұрын

Same .-.

@v3g627 3 жыл бұрын

Especially online classes. Everything is unorganized 😭

@oshkosh7 3 жыл бұрын

@@v3g627 yup, pretty much

@DN-ps4bn 8 ай бұрын

I’m confused as to how you went from (0.5m)^2 to (0.25m)^2

@72.moemen 3 ай бұрын

No he went from (0.5m)^2 to 0.25 m² like he applied the square root on it directly 0.5×0.5=0.25 and leave the square on the m so we get 0.25 m²

@1brianm7 Жыл бұрын

Thank you so much sal.

@Luan-se7gr 5 жыл бұрын

I should start paying my tuition here.

@constantinknab 3 жыл бұрын

You can donate

@rajarajeswari6906 4 жыл бұрын

How did u find k

@eternalodball6426 2 жыл бұрын

funny how every single youtuber is doing fraud on youtube without explaining the basics and there's this guy who single point like in really cellular lv. . ty

@srussifordwilliams 10 ай бұрын

Nearly 10 years watching this channel and my god, this stuff is always good. Thank you!!!!

@themobslayer1017 3 жыл бұрын

Omg, thank you khan academy, you have showed me an equation much more easier and understandable to use than my stupid physics teacher. THANK YOU!

@arpanojha6440 2 жыл бұрын

Where is the negative sign at last??

@musicman3998 2 жыл бұрын

Can someone else tell me how to do this without all those wacky variables?

@Mark_Jonas 3 ай бұрын

How do I figure out K?

@aberronxo77 Жыл бұрын

Thank you very much for such a good explanation 😀

@michaelhaggerty569 9 жыл бұрын

This could not have come at a better time! TGFS (Thank God For Sal)....hoping it'll catch on

@TheGeneralBullet 5 жыл бұрын

It never did

@thefryingpan951 7 жыл бұрын

so powerful, i enjoyed this!

@selfpreserve 6 жыл бұрын

You saved my grade, finally can get this A i wanted for ages! Thank u

@invisibleguy9828 10 ай бұрын

@EscaExcel 8 жыл бұрын

Very helpful, thanks a lot.

@bethgamboa21 5 жыл бұрын

thanks to this video its a big help for me

@xecho19x45 4 жыл бұрын

I was taught a completely different way, but both work well! Thank you!

@sanchi7410 2 жыл бұрын

Thankyou for finally nailing this topic in my head

@yuetongliu5387 9 жыл бұрын

That is so kool...though i learnt about Coulomb's law before....

@ivanaseric5696 4 жыл бұрын

amazing video! thank you

@kpopenglishandhindimusicwo6601 8 жыл бұрын

a helpful video..... thanks

@madhurachakraborty8835 2 жыл бұрын

You really explain it wonderfully

@blackswan5314 8 жыл бұрын

thanks for uploading!!

@gamingwarrior3734 3 жыл бұрын

Thanks sir 😊 i am from India

@lucascave1310 4 жыл бұрын

How did he find Ke

@gracedutoit8386 3 жыл бұрын

Bold of you to assume my teacher is going to give us the charges and distance in the required unit😐 Love your videos, they help me so much! Thanks!

@slaps7016 2 жыл бұрын

his voice is sooothing can't just be me

@somememes1473 4 жыл бұрын

Thank you for saving me with this easy explaination.

@jamesursilvano4618 6 жыл бұрын

Thanks a lot for this video sir... This really helps me in my teaching (Physics subjects although i am a Math Major )here at Philippines. Thanks you very much and God bless !

@frankalvarez7387 7 жыл бұрын

saved my ass from F, so THANK You :)

@favageseline2081 10 ай бұрын

Do you need to represent if its replusive or attractive, if so, how?

@arachan5280 6 жыл бұрын

this is so amazing thank you for making physics so interesting

@lingling40hours7 2 жыл бұрын

You are a great teacher . Thank you

@siddhanttambe4066 7 жыл бұрын

really helpful man

@promise3824 5 жыл бұрын

Thanks that help me a lot 💛💛

@precisionsoundworksstudio Жыл бұрын

Fascinating how easily you work through these numbers. Humbly, I'm slightly lost in the math. Where is the best place to start in order to get up to speed?

@carspoint3726 7 жыл бұрын

thank u this video helps too much welldone

@PRINCESSTV-13 7 жыл бұрын

was very useful

@loreyn3875 3 жыл бұрын

Thank you!

@MA-jn7rd 4 жыл бұрын

You make all this seem like a walk in the park thanks so muchhh

@BMeena-mw3bt 4 жыл бұрын

Ooo columb dont see me like

@janpoloregineparagas7768 2 жыл бұрын

Why did you add 20 on it?

@youz123 Жыл бұрын

watching you explain this is like watching an artist drawing. I am mesmerized.

@lamstinggameplay4431 2 жыл бұрын

I love your videos. Love from Romania!

@blackwatch4471 8 жыл бұрын

I always thought that you could get a negative result. like negative newtons.Thanks for clearing that up!

@Blue.Sparkle1 7 жыл бұрын

Thank goodness for this video 😅🎉

@neerajpatil3736 2 жыл бұрын

This guy is a life saver . Thank you for this video .Thank you so much

@burhankhalidroa222 5 ай бұрын

10:44 at this place 10 suqare 5x100 is 10 upon 7not 10 uopn 5 ??

@PRENCEE 3 жыл бұрын

Thank you for having clear English 😇

@ephi6136 5 жыл бұрын

This really helps because i wanted to know how the cancellation actually works

@AlOoL2200 7 жыл бұрын

great thanx

@husseinadil6290 7 жыл бұрын

Thank you.

@jfhameem1532 3 жыл бұрын

Thanks for your support.Khan academy

@WJCharliee 2 жыл бұрын

Excellent teacher! Very empirical and pragmatic step by beautiful step… Perfect for a person who’s not mathematically minded like 90% of the world population ha ha. Keep up the excellent work!

@maverickmaranan3151 Жыл бұрын

How did it became 7 exponent at the end?

@burhankhalidroa222 5 ай бұрын

Idk

@Avarice299 3 жыл бұрын

Khan Academy be saving my back in clutch, can't thank you much

@bapunhansdah6629 6 жыл бұрын

very nice

@ZAfunchannel Жыл бұрын

Who has come here from our book 📖 class 10 please like

@K4MR4N1UK123 7 жыл бұрын

Why do you have to write C's for coulumb only to cancel them out later with one another to cause a lot confusion in the sum? You can just time 9 x 10^9 by (5x10^-3)(-1x10-1)/0.25 and that's it

@shamsakanwal9901 7 жыл бұрын

understanding

@13Gibson87 9 жыл бұрын

Khan Academy could you make more videos about electricity and magnetism ? :) It really helps me in this semester physics. More about Electric field, Gauss law of electrostatics, more about potential, capaticy and magnetic field :) One more time thank you :) Going to donate till the end of this year because of your great educational system ! :)

@ammaressam9619 8 ай бұрын

How did u do in ur semester physics after 8 years ? 😅

@13Gibson87 8 ай бұрын

@@ammaressam9619 Thanks to Sal, I passed the course ;-) it wasn't an A, but I did not feel as though I am any way close to failing it as well

@ds-bv6tj 5 ай бұрын

@@13Gibson87 have you graduated or are you still studying :)?

@rmkworld5839 7 жыл бұрын

Nice lecture

@sleepyhead7344 2 жыл бұрын

why positive nine times positive five then times again to negatice one resulted to positive 45? isnt that supposed to b -45? pls help

@mohamadelghouti5070 6 жыл бұрын

the voice of Sal has a powerful impact, I like the other guy as well, but I dont know why I feel Sal's voice more powerful

@TranscendentBell 9 жыл бұрын

No Game No Life made me want to learn about this.

@chinyamamoto9753 9 жыл бұрын

TranscendentBell I remember seeing that super cool scene. I immediately went to google after seeing that episode. hahahha. effects of anime:D

@SeiryuNanago 6 жыл бұрын

I'm currently pausing the episode to check this video actually.

@int16_t 5 жыл бұрын

Lol me too! Anime teaches us.

@mateoslab 5 жыл бұрын

what is that?

@int16_t 5 жыл бұрын

@@mateoslab Its an anime.

@colosolizer2184 4 жыл бұрын

Why isnt that answer negative

@jubiis466 2 жыл бұрын

how did the 10^5 become 10^7 at the end??? sorry if this is rlly dumb

@vega2477 5 жыл бұрын

I understand this better than my physics teacher

@michaelhilliary7807 8 жыл бұрын

my head hurts

@gabrielquintana1302 8 жыл бұрын

lol mine too

@alsilver7780 6 жыл бұрын

lol mine three

@techinsane8505 5 жыл бұрын

Lol mine four

@reyesandres9887 5 жыл бұрын

@@vishwadeepmahapatra7882 lol mine 7

@juuzou4317 5 жыл бұрын

@@reyesandres9887 lol mine 8

@raahilmehta6180 6 жыл бұрын

bow to the khan academy

@user-zp8jl4jp1v 3 жыл бұрын

It 's beautiful thanks💙💙💙💙💙💙💙💙💙💙💙💙💙💙💙💙💙💙

@HockeyMan-kd7yj 6 жыл бұрын

how are you writing so well with the cursor?

@battlebae12 5 жыл бұрын

So in order to levitate an object you’d need to saturate the surrounding area with the same amount of positively charged electrons to repulse the object to be in the form of levitation. Trying to figure out game vehicles that utilize the levitation phenomenon. Known as the magrider in planet side two it is a levitating main battle tank. That moves in any direction by the use of levitation.

@JS17th Жыл бұрын

what does the k mean please 2:51

@mdatifhossain Жыл бұрын

The K is the constant of proportionality

@micahwright1578 3 жыл бұрын

I just want to know where k comes from

@CzechRiot 8 жыл бұрын

I like the turntabling parts "we we wewe we we"... "our our ourourour our..." chekc the mic yo

@Ronnie_11_ 8 жыл бұрын

ha ha ha

@nathanburton692 6 жыл бұрын

CzechRiot 😂😂😂😂😂👏👏

@alsilver7780 6 жыл бұрын

@tarifahmad486 4 жыл бұрын

yep the one on 2:31 the the the the the

@Donglok 3 жыл бұрын

His voice is lower than my physics marks

@onethdasanayake3689 3 жыл бұрын

Khan Academy did something quite amazing the idiotic education system couldn't do

@RazanIsMe 7 жыл бұрын

you helped me a lot ,man now I feel like I've got some hope to pass my exam😭💖

@shahidariaz438 10 ай бұрын

Just wondering, did you pass?

@emmanuelhun402 2 жыл бұрын

Great teacher one question on the last example how to you get 0.25 its already 0.5 up there

@celeste9549 2 жыл бұрын

0.5 squared is 0.25

@lettuceman6577 4 ай бұрын

@@celeste9549thank you

@TundeFunny 7 жыл бұрын

where did u get 0.25m^2 from??

@enchantking 6 жыл бұрын

Tee Zay you square the .5 this making it .25 ( .5 • .5 = .25)

@AnonymousAlien2099 6 жыл бұрын

Lol

@taj9257 3 жыл бұрын

@@enchantking thx

@ahmedshamy5315 9 жыл бұрын

Can you work on finding percent change please !!!

@vibe4394 3 жыл бұрын

Are we able to use absolute value in this instance because the + or - at the end doesn't matter since we already know if the force is attractive before we start the calculation?