Pressure at a depth in a fluid | Fluids | Physics

Pressure at a depth in a fluid | Fluids | Physics | Khan Academy

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16 жыл бұрын

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Sal finishes the calculation or work to determine the mechanical advantage in a U-shaped tube. He also explains pressure and Pascal's Principal. Created by Sal Khan.
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Пікірлер: 104

@269Tanya 9 жыл бұрын

Sal Khan = gift from God!

@visulahametikalla1688 3 жыл бұрын

Know that every person is a gift from god to the earth

@firasgamer5426 3 жыл бұрын

@@visulahametikalla1688 😐

@DoggyD.electro 2 жыл бұрын

he is our our Bangladesh's PROUD ,,

@mohamedmotaz5194 2 жыл бұрын

@@DoggyD.electro sry sal isn't LGBTQ

@anava84 16 жыл бұрын

Yo its P sub d and im listening to my pal, Sal He'll tell you everything about Pascal. But don't worry, he wont make it complicated What he will do is make your teacher seem overrated! My man Sal's main mission Is to make physics part of your intuition! Its P sub d and im over and out! Sal is the best beyond any doubt! [dont hate. participate ;)]

@ankitaaarya 4 жыл бұрын

Aint hatin', participatin' Sals methods, elucidating His knowledge, exuberating

@commentedited232 4 жыл бұрын

If I could like this twice, I would

@markyden 3 жыл бұрын

@@ankitaaaryabars be 🔥🔥

@Aequorine Жыл бұрын

@@ankitaaarya 14 years after these original comments people still be lookin at Sal's physics lessons people like me have an exam to ace but as long as Sal's alive there is nothing we can't face Sometimes when my teacher be babblin Sal's physics lessons are things I be searchin So no matter how old or decomposed these comments are We will carry Sal's legacy really really far!

@elenareixa6480 8 жыл бұрын

I'm studying physics and Khan Academy is making me keep on moving, thanks god, there was a time in witch i couldnt see the light

@luongmaihunggia 6 жыл бұрын

"there was a time in which I couldn't see the light" Wow!

@luongmaihunggia 6 жыл бұрын

Trahn-Jahn lol

@RobsonOliveira-yw9tf 6 жыл бұрын

"hikari" > "light"

@ankitaaarya 4 жыл бұрын

Good luck for your future, if you're still doing physics.

@sjlegends 4 жыл бұрын

No light, haha, photons are not happy

@sigirigorilla5570 7 жыл бұрын

...gotten rid of the atmosphere. That's very negative, so we wont think about it..." solutions to all your problems in life

@nsadnan370 9 жыл бұрын

Khan Academy is whats keeping me moving on in first year engineering...Thanks:)Thanks alot!

@user-sl4vj5sw8t 4 ай бұрын

Thanks 😊 sir . 9 minutes ago i had no clue about this topic, but you derivating this equation simplified everything in my Physics Prac book.

@michaelspoz 12 жыл бұрын

You are the only reason I'm going to pass physics this semester.

@fahadfarooq8876 2 жыл бұрын

Hmm liar

@Waeweas Жыл бұрын

Well... did you pass?

@This_comeback_is_personal 3 жыл бұрын

man, i just love you, the jokes that you make during the video had me dead. I am having a good time and i am learning at the same time.

@ZakariaElwalily 9 жыл бұрын

F=PHAG now you will never forget

@madhurimabhandari1559 8 жыл бұрын

no wrong it's not P its row plz its wrong P is pressure

@AkashCherukuri 8 жыл бұрын

+madhurima bhandari its NOT even 'row', its 'rho'. A greek alphabet.

@BibijIvoirienne 4 жыл бұрын

12 years later..still watching 💕

@Aditya-nf6sy Жыл бұрын

15🙂

@lazaraado 4 жыл бұрын

this was the exact question on the thing i was stuck on!! thank you so much

@lusianasutanto5863 6 жыл бұрын

Yes.. I agree with the rest of the comment that you explain well..and clearly...bravo...and thank u

@KP-wc6hm 6 жыл бұрын

Just perfect

@popandu8297 9 жыл бұрын

I love these videos ... they are so clear and informative! A* The only thing that could be improved is the accuracy of the drawing : )

@jayasreepatil8960 4 жыл бұрын

U explained it clearly sir

@88yodnom 11 жыл бұрын

1:16 "That's very negative, so we won't think about that." #swag

@thienfoil 13 жыл бұрын

this is awesome

@RXMK-wx5ih 7 жыл бұрын

Thank you very much sir , it so clear lol

@mattphorwich 3 жыл бұрын

Groovy for engineering... deep ocean and other planets expiration as well. Dig the educational videos... limitless potential!

@TheLokomente 2 жыл бұрын

Could you please make a video on the limit version of pressure? Where pressure = lim( Fnormal/A ) as A goes to A’ , where A’ is the area at a point in a fluid at rest.

@vidr5857 7 жыл бұрын

You teach patiently sir

@ThunderFoxMusic 11 жыл бұрын

lol, the solar winds blew the air away xD "That's very negative, so lets not talk about that" funny man, man!

@eliteessence831 3 жыл бұрын

THis is awesome and it’s seriously 12 years old and now I’m watching it with popcorn

@garretthayes5393 8 жыл бұрын

7:17 haha

@shouryarai2624 5 жыл бұрын

I thought u were the teacher I needed then u wrote g=9.8 instead of 10... By the way Thanq for the Vdo 💓

@RobertWilliams-mk8pl 5 жыл бұрын

I like the different colors.

@MrWadeBarrett 12 жыл бұрын

Thank you, you are doing an excellent job! Really, thank you so much!

@minimee2908 2 жыл бұрын

You still there?

@maximberestnev1934 Ай бұрын

downward force = density times volume times gravity

@ashmano23 8 жыл бұрын

Sal, you are a life saver. Really, when you teach everything makes sense. Thank you so much. May God bless you. :')

@sofiahazima2556 3 жыл бұрын

heyooo, I have a question: sometimes, the force exerted on the upwards direction is calculated by this equation: F'= (P+ΔP) x A. What does the ΔP stand for? I really can't understand this equation, as the force upwards is equal to the force downwards... keep up your videos, I've already subscribed to your channel and also registered to your page! thank you for making physics so more interesting :)

@Be1smaht 11 жыл бұрын

Good practice is to derive this all BY yourself. YOu'll know this stuff so well if you do that.

@alektad 10 жыл бұрын

This is so educational and so entertaining at the same time. Good to know that F=phag, xD

@saravananr9485 11 жыл бұрын

should the gravity be taken with -ve sign for force upward?

@mrigankusaharia1741 3 жыл бұрын

8:24 this little piece of ...... Foil 😄

@josephlimotan8475 6 жыл бұрын

is a good teacher better than my teacher in the Philippines

@MrDoduare 14 жыл бұрын

lol at 6:39 he spells phag :D I love your videos Sal and I know they'll help me on my AP physics test tomorrow

@JackAdrianZappa 5 жыл бұрын

I'm confused. Density is a function of pressure. Pressure is a function of height. Mass of the liquid above the reference point can't be just *area * height * density* as density is constantly varying over height.

@wesleyyator8488 7 жыл бұрын

integrating ict in teaching made more enjoyable

@fddgghffgyhvcf7679 4 жыл бұрын

nice

@feynstein1004 3 жыл бұрын

6:15 That's only true for cylindrical vessels. If you instead assume a conical vessel, the volume would be 1/3*A*h and so you get P=1/3*p*g*h Could anyone explain this to me please? It's been bothering me for 12 years 😖

@psbbiaku640 7 жыл бұрын

hey sal I am ur no. 1 fan

@aquarian1295 11 жыл бұрын

yep

@rishabdutta2135 5 жыл бұрын

What is providing the upward force???

@TurbotortoiseStickle 12 жыл бұрын

Now I want to eat melted marshmellows with a lead spoon. : )

@megaelliott 15 жыл бұрын

2:40

@cybourg 15 жыл бұрын

Haha.... "Lets Not Call It Water"... the blooper just make the whole lecture sound interesting.

@dhruvrai2170 3 жыл бұрын

Are you still using this account?

@Palmar3s 13 жыл бұрын

@anava84 mic check 1 2 one 2!

@aratisinha6572 Жыл бұрын

Sir is pressure at a depth h in a fluid is equal to the pressure outside the fluid plus the fluid

@Tplusclips10 6 жыл бұрын

Who dislikes this guy?

@gairick9 4 жыл бұрын

bob ross of science

@greent26tube 13 жыл бұрын

@anava84 YESSSSSSSSS!!!!! MEGA WIN HERE.

@truth3137 6 жыл бұрын

Here, it's assumed that the circular foil is of negligible mass, otherwise, the foil would accelerate downwards, I'm sure. The foil is just used as an indicator. The air is also a fluid, it also has a pressure on our bodies. The higher you gob the lesser the pressure. That's why sometimes blood comes out of the nose of a mountaineer , as the atmospheric pressure keeps our blood pressure sustainable. When this atmospheric pressure decreases then the blood pressure becomes relatively more, thus the blood vessels tear out and blood leaks out. A horrific situation !!!!!:v

@pujithasandakelum9067 6 жыл бұрын

hw cn we keep water as a liquid in a vacum :D im just kidding hahaa thnks for these free education :)

@ezalcinoryahoocom 12 жыл бұрын

isn't it suppose 2 be 980,000Pa , if im not mistaken

@KungShu69 7 жыл бұрын

If I had a dime for every pixel this video has I would have roughly seven cents.Good content though.

@anthonyabadia3984 4 жыл бұрын

Did anyone not HOLLER at 6:47

@ryukseyes 15 жыл бұрын

great lesson thx! btw 'lead is more dense than marshmallows' lol

@kim15742 7 жыл бұрын

Well ρ is not p

@ripansharma5259 6 жыл бұрын

Thanks for the information sir😂😂

@tirsosrabenoja9510 7 жыл бұрын

Please help me guys.. Where did he get the 10m for the height? Thank you.

@sherazkhan2802 6 жыл бұрын

Tirso Sr Abenoja That was just a random value .

@ripansharma5259 6 жыл бұрын

Lol

@nausheenfaruqui9061 2 жыл бұрын

@hhkhan87 6 жыл бұрын

I'm a forth graders and I'm watching this!!!!!

@magnus4770 5 жыл бұрын

you are definately not a fourth grader

@tibyanabdullahi5786 2 жыл бұрын

Me watching this on 2022

@ThunderFoxMusic 11 жыл бұрын

cubic meter of marshmallows XP and feathers!

@BluegrassHomestead 6 жыл бұрын

And what is G? where I the formula for gravity. you found P, and then stopped. What is G? Can you use both Density and Gravity if they are in essence the same thing? Prove gravity.