Electrostatics (part 1): Introduction to Charge and Coulomb's Law

[Goldesel222]

Thx for these videos!

[dontdoitjohnny77]

at very end, around 13:55 you say if they are both positive they will attract. you mean if one is positive and 1 is negative

[SeriousMarcy]

You are so awesome :3 Thanks for making these videos!

[XxParchmentMoonxX]

"Before we started rubbing amber into our hair, we really didn't experience much charge...unless we got struck by lightening." rofl XD

[dotbrett]

"No one really, fundamentally, knows anything."  So true.

[CmeronPrice]

this guy sure nows his stuff



[SilentShotV]

So what happened to these videos on the website? It says theyre not in the video library

[Waqasgju]

You are THE BEST

[sh3rl0ck999]

cant you just use a calculator like a normal person LOL

[adisamun]

thankyou

[aniyeats]

-180*10^5 N @ 13:26

[TheMichaeljohnny]

can you explain me about permitivity of free space??????

[hanansleman]

there is some mistake at ((12:20)) you should have multipled 9 times 5 times 10...

instead of 9 times "0.5" times 10

other than that i wanna say that your videos saved me :D

[drkwhy]

Sal, I was so angry at electrodynamics and was hesitant at pursuing a physics major because whenever I thought of charge, it made me sick. After this video they don't look so intimidating afterall! You definitely are THE man. Thanks for ALL your videos! Maybe next can be QUANTUM MECHANICS:P lol

[1995Sel]

However very informative, thankyou :)

[1995Sel]

Just so you all know , maybe he should change it but the info is actually incorrect in that 1 coulomb is equal to the charge of 6.25 billion billion electrons not 6.24 billion billion, sorry , had to correct

[vangedi]

This is very good and informative. Just what I was looking for :)

[palakif123]

really very helpfull.. i cnt get nythng in my classes n it helped me a lot... thanx........

[elperro5]

I just started taking physics, anything that i do not understand in class is explained by your videos in amazing detail. thanks so much for the channels!

[majhodge]

no one fundamentally knows anything

[MellowCruisin]

This is my favorite physics topic to do high so far.

[captainjack77]

I love physics. "No one really fundamentally knows anything."

[animefreak619240]

Course selections came! I'm taking physics 2 honors next year. I hope to see you on YouTube again lol!

[greenxcastlexcrasher]

I love these videos so much! They are such a huge help for me in AP Physics. I just understand you so much better than my teacher.

[TheMarvin123abc]

best!

[TheMarvin123abc]

best

[ooglebydoogleby]

Are you using 1.6 in the second equation as a reciprocal to the 6.24 because the two equations don't seem to balance. Sorry if it is just my maths.

[deepu2058]

superlyk

[polos505]

great video, I needed to refresh on this topic. I think it will be better if you use big Q for charge chemistry and physic both uses small q for heat.

[humayou2004]

Aslaam U 'alakum brother Salmaan. I really like all your videos. They're very simple & interesting. U actually make learning FUN! I was wondering if you had anything on Light & Optics (refraction, mirrors & lenses) in the physics playlist. If not, I'd really appreciate it if you can post some videos. (Anybody else reading this comment, if there are some videos on those topics can u please let me know under which playlist they are). Thank you :)

[1ekimmike1]

does not need to be absolute value, this way makes it easier to judge direction of force given a sign convention... should have been = -180•10^5

[zacbell88]

shouldnt q1 and q2 be absolute values?

[TheHereticAsian]

@zacbell88 yup. taht's how i learned it at least. yuo take their abs values but keep in mind if its 2 pos or 2 neg. charges then ur force will repel each other and if its one pos one neg then the force is one of attraction.

i hope i helped a bit

[r0mit]

@zacbell88 i tink i understand d confusion u have. Electrons and protons have absolute values, bt wen u do A level questions theyll always use mass of charged partcles, nt single elctrons or protons, the charge on dis "blob" of chraged particles is wat changes. he called dem "particles" bt he really means like a charged bunch of dem

[MrBimo11]

i like thus

[28haricharan]

you said if they were both positive they were going to attract?

[QuantumCoulomb]

great videos! thanks alot!

[JazimKhan]

Surely ur name is Khan n ur not a terrorist!!

[TheHellraiser125]

hey sal ur doin some awsome stuff with these vids..well i think u made a mistake in the example of Coulomb's law..The charge of the positive particle is 5x10^-3 but in the formula u put .5x10^-3.....

[Kev888]

@TheHellraiser125 That little dot is not a decimal point--it's an interpunct (or a middle point if you prefer) and is just another way of saying "multiplied by". So XxY = X∙Y

[agent2993]

Man i love your videos!!!!does this guy have any chem and maths videos????????plz tell

[mangral26]

please tell me how can solve problem of coulomb law pls

[bkisme]

I think this video resulted in my now-constant use of the word "arbitrary"

:p

[upasna31]

is just me or is there a mistake in his video at about 12:43.. shouldn't he have multipled 9 time 5 times 10... instead of 9 times 0.5 times 10? considering he took the exponents into account with the 10 to the 4 thing?

[NoellieSigala]

hey anyone knoe how to derive coulombs formula..?

or a site were icould look for it?

[sponsoredwalk1]

Well, I've seen it being derived in a show called "The Mechanical Universe" which is free online, it's a 52 part half-hour physics course that derives the Coulomb Charge & loads of amazing stuff.

I advise you to check it out.

[TigerXC26]

"no one fundamentally knows anything" LOL

[sue69696]

thx alot sal this isn't in my syllabus but i watched cuz its seemed interestin any ways thx alot

[vickiormindyb]

I don't know if this is relevant here, but we have an entire system based on electricity. It's called the Conduction System of the heart, and I'm sure it's the reason joules are used in cardioconverters (defibrillation machines).

[vickiormindyb]

I know I overdo the charge property whenever I get near my credit card. : )

Another hideous pun, but it's really true.

Now I know why my husband said no whenever I wanted to use his.

I have a weakness for spending money on credit.

Actually, I have to go back a ways in this play list. I just noticed I'm on number 88 and probably should start at 1.

CYA

[6bikal6]

it was a bit funny when you were rushing against time at last moment

[thelemur]

"no-one fundamentally know anything" I will cite that :D

[PeaceLoveFairytales]

i was like ... hahahahahahah

[Ss0rc]

Great vids by the way! :)

[Ss0rc]

I think you made a mistake. 5 * 10 * 9 is actually 450, it'd be -450 * 10^4/.25^2, wouldn't it? So -180 * 10^5

Just checking, sorry if this sounds rude

[TravisMorien]

What software do you use to draw with?

I have a tablet PC and want to do something similar. I have Camtasia to record what's on screen, but what's a decent drawing app?

I could use OneNote I suppose, or Paint, is that the way to go?

[Ss0rc]

@TravisMorien He uses paint.

[Plutoniummatt]

@TravisMorien

try windows journal or corel painter

[Waranle]

Good video, thnx Sal

[MistrEgg]

Ah yes. I remember in the other electrostatics video you saying " we remember learning coulombs law from the other video". It's finally here! Thanks.

[sharperguy]

If they were called blue charge and red charge the implication would've been they'd repel eachother.

[xhyugunx]

Organic Chemistry Please!

[Swetlana0]

I am in desperate need of organic chem videos.

[MistrEgg]

search chemguy organic chemistry. Very good introduction to structures and naming.

[2273897]

Hey Sal, do you need someone to do organic chem videos for ya?

[rax7]

holy cow man. you know everything. look at your videos. how long did you take to learn all the stuffs?

[AverageJoe8686]

You FORGOT to upload this? Jees man! Talk about the absent professor...XD

[rlarkdms7]

THANKS! i've been hoping you'd upload electrostatics!

[holylucifer666]

Great videos but I am confused at the end of the video at the last few seconds you said if they were both positive they were going to attract?

[khanacademy]

I misspoke at the end. If they are both the same charge, they will definitely repel each other.

[Swetlana0]

Your brain malfunctions a lot, I must say!

I love when your brain malfunctions....

[KenshinXI]

@khanacademy

thank for the explain. You are a great teacher.

[skun406]

It's a mistake.

[rohanert]

@holylucifer666 ---------dude.a heavy positive charge body can attract a small postive charged body ................depends on thier magnitude.............



[bkisme]

"Thats a way of saying I really don't know what it is, and frankly, no one fundamentally knows what it is, I mean actually, no one really fundamentally knows anything!"

Thats deep. XD

[XPhile10131121]

Funny that you should post this now because this is what we're learning about in my physics class right now. =)