GCSE Physics - Liquid Pressure & Upthrust #49

[@irusu6771]

My science teachers always play your videos in class. The only time I understand. You explain things so simply yet so well. Thank you so much 🙏🏽

[@Cognitoedu]

Hey thank you for such a kind comment! Really happy to hear the videos are helping you out, and wishing you loads of luck for your work 🥳

[@nstar3489]

I didn't realize pressure was this easy. Thank You!!!

[@71yearoldofc]

Gal what you on this hard wha-

[@Parabelleum_]

@@71yearoldofc Pressure is one of the easiest science topics

[@CHICHI-vn9kd]

I got stuck in the physics lesson today about Upthrust. After watching your video, I felt much clearer than before. Especially of the definition of Upthrust. My teacher told me that" the displaced fluid exert a force upwards towards the object" which I didn't fully understand. But I understand much better now with the pressure. Thank you

[@nahlahnaairah2438]

Great videos. I like the animation style :)

[@Cognitoedu]

Thanks! Glad you like them and they’re useful to you 🙌

[@neoneditz92]

I appreciate what you do man, i previously had issues with Physics and Chemistry, it was hard to understand some topics for example this exact one, but becoz of your vids, I've improved SIGNIFICANTLY. Thank you.

[@archjanasivasuthan6252]

Your GCSE videos helped me so much!! I'll never unsubscribe from your channel!!! I'll recommend you to all the year 10/11's that I know of! Also, are you thinking of doing a level videos too? Would be extremely useful because my teachers seem to not know what they're doing.

[@Cognitoedu]

Hey Archjana, thank you for such a lovely comment! We really Appreciate your support!! I’m sorry to say it’s likely we won’t be doing A levels for quite a while. We do intend to, but each A level would take approximately as long as everything we’ve done so far - so we’re going to tackle more GCSE stuff first :)

[@armstrongtixid6873]

They've almost finished all of GCSE as of early 2021, so they'll probably go to A Level soon I hope.

[@Cognitoedu]

If you’d like to practise what's covered in this video, check out the lesson on the Cognito platform - cognitoedu.org/coursesubtopic/p2-gcse-aqa-h-t_2.13. The platform’s totally free, and has been built to make learning and revision as easy as possible. The main features are: - Lessons organised by topic, only the lessons relevant to your specific exam board and tier are shown. - Automatic progress tracking. Progress bars tell you what you’re doing well at, and what you need to spend some time on. - Practise quizzes so you can test your knowledge. You can quiz yourself on any combination of topics you like. - A huge number of fully-hinted questions that take you step-by-step through some of the trickiest calculations & concepts. - A comprehensive bank of past exam papers, organised both by year, and also by topic. Amadeus & Tom

[@I_miss_the_moon]

bro out here single handedly saving my physics exams thankyou smm

[@NevanBhagat]

I thought pressure was hard I struggled in it but thanks to you it is so easy for me now

[@AmirahO-d4u]

Morning creamers for physics paper 2 (it’s finally my turn to say this)

[@brendonoreilly9593]

Thanks so much for this! I'm studying level 4 physics now and this equation has made it so clear! I see the light! Cackle!

[@faresahmed9190]

im currently in grade 8 and studying the things im taking for igcse right now to make things easier for the next year

[@NevanBhagat]

So like does the upthrust depend upon the density of the water

[@mr.migallo1138]

Cognito, firstly, your videos are excellent, and I thank you for your work. In this video you start by talking about part of the static pressure being down to 'particle collisions' and that this 'component' becomes less significant as depth increases. I am not sure whether its helpful for GCSE students to think of hydrostatic pressure in these terms. As far as I understand it, the relative static pressure beneath a liquid is solely the product of density, depth and g. If it were a function of the rate of collision then surely the temperature of the water would influence it? The thermal motion of the liquid molecules adjacent to the submerged object's surfaces should not be thought of in the same light as the translational motion of particles in a gas.

[@silverminty861]

The graihics of these videos are so nice and aesthetic really helps to understand almost any topic lol

[@Cognitoedu]

Ah thanks so much :)

[@N.DZ80EDITS]

these comments are ancient 👴

[@vandine690]

Even yours is

[@iambored4386]

@@vandine690lmao ikr 😭

[@vandine690]

@@iambored4386 😂lol

[@snackpubg8993]

Fir sure​@@vandine690

[@N.DZ80EDITS]

@@vandine690 LOL

[@mr.fallhigh5081]

Thanks! I understand up thrust like eating a cake keep up the great work!

[@alexandrmxox]

Great video! This topic is very confusing so thanks very much!

[@dylan5360]

Thank you! Have learnt so much from this video. Keep up the great work.

[@myintooookhin7439]

Splendid explanation 🎉🎉❤

[@chloe-us5jf]

thank god this channel exists, my teacher cant teach for shit so without you im doomed, thank you!!

[@syedzafar3068]

great explanations

[@hecticentertainment]

Just a quick one, do we need to know about the amount of displaced water equals the size of the upthrust?

[@simalrafiquerao6944]

Thank u so much🥰

[@LozArcher]

Very helpful and love the drawings that go with it!

[@mehirali7388]

keep going love your method

[@Nazeer-g4p]

Thank you sir for the great explanation ❤

[@shuveeni2374]

thank u for these videos u are saving me x

[@miagore6022]

great vid!

[@isabelhaywood817]

nice

[@miagore6022]

@@isabelhaywood817 fancy seeing you here

[@PriscilliaOkoro415]

Thank you

[@icy3203]

tanks a lot

[@Saddafa-p1q]

is this also for gcse combined science

[@glichman-xw9ey]

Thank u very much

[@ranasamy8339]

From where did we get 9.8 ??

[@rz1sa]

gravitational field strenght of the earth, most teachers say its 10N but im guessing 9.8 is the real value. Still i would use 10N just to be safe

[@johnc9505]

@@rz1sa 9.8 is actually the most accurate value to use, your school may be diff but our teachers always say use 9.8 unless the question indicates to estimate or has given the value of 10N in the question - I believe using 9.8 is safer :)

[@aqacquires4243]

@@johnc9505 im pretty sure it dosen't matter in igcse so using both 10 or 9.8 are options

[@amnakhan2265]

I'm thought with a different formula which is p=f / a

[@amayaphotos8016]

that formula is for objects in the air. This one is only for objects that are in a liquid. that's why it's called, 'liquid pressure'

[@43dl3ntil]

They are the same formula.

[@VioletChloe]

Great video but I don’t quite understand why the bottom of the object would have a higher pressure because it is deeper,I thought the depth only mattered for the downwards force because of the weight of the water above pushing it down,can someone please explain this to me,thanks.

[@khushimodhwadia9342]

im not sure either but i think its because the bottom of the object has more particles colliding with it than the top cus theres more water below the object than above it. im not sure but thats what im guessing

[@eliassinau2932]

It's like a ball, the more u push it into the water the harder the effort it needs for it to be pushed further down.

[@LynetteLuwedde]

Where did you get the 9.8 from

[@LynetteLuwedde]

Please can you try to explain

[@M4D_H4TT3R]

9.8 is the value of Earth's gravitational field. It is constant and you just have to memorise it.

[@ogundejibisola3335]

Where that 9.8 come out

[@M4D_H4TT3R]

9.8 is the value of Earth's gravitational field. It is constant and you just have to memorise it.

[@sajamohammed6026]

thanks for the lesson I am understand the concept i need to help are you can help me please

[@Totally_Chaos]

Why is the chicken green???

[@tinyaudanielwong6086]

ok

[@lochanarajapaksha4054]

👏👏

[@kenzyahmed8607]

isnt the g 10 not 9.8

[@Cognitoedu]

It depends on your rounding, to 3 significant figures it's 9.81, so could be rounded to 9.8 if 2 significant figures or 10 if 1 significant figure :)

[@marvinsingh9960]

I promise at the end of the video I had some tears with a smile cuz I was suffering from this chapter for a while but now tbh I'm not completely good with it but still this video made me improved, improved a lot❤️😊 I'm following this channel on Insta apart from subscribing your channel on KZbin, so that I stay more updated

[@Cognitoedu]

Ah thank you so much Marvin, it's a tricky topic and we're really glad we could help. I hope it all makes sense soon 🙏

[@tanha7289]

Wa'ta boizzz

[@kwil443]

niiiiicceeeeeeee

[@Braytech_Official]

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[@raydt_]

wotah

[@deeptichand3200]

RECENT COMMENT ;)

[@anjahaussler3026]

I don’t understand you

[@M4D_H4TT3R]

What exactly you do not understand so I can help you?

[@WeGoturback]

💀