iylia elena

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@mrbigcat9 4 күн бұрын

what book are you using?

@Atila_el_Huno 21 күн бұрын

Thanks

@samreet_kaur Ай бұрын

Can you tell me the name of book ?

@agustinizaguirre9460 2 ай бұрын

keep uploading

@user-wf5qd3ti2h 2 ай бұрын

Can l have ur app number tutor

@tusharbadaliya9095 3 ай бұрын

Why is pressure constant?

@iyliaelena9308 3 ай бұрын

Pressure is constant when the piston is free to move (up or down). When the piston movement is restricted, pressure may change.

@tusharbadaliya9095 3 ай бұрын

@@iyliaelena9308 okay okay thanks 😊

@rstega4474 4 ай бұрын

That's good

@Leyan_leyuna 4 ай бұрын

🎉🎉🎉🎉😮

@Islam78618 5 ай бұрын

Your teaching method is so good ❤

@Islam78618 5 ай бұрын

So helpful

@Islam78618 5 ай бұрын

Thank you Mam

@johnmwebela2226 6 ай бұрын

I read through this it never made sense just after watching this i don't know if its your voice that has made me understand lol or maybe you are just so good at material science. Thanks a lot have greatly benefitted watching from africa💯

@iyliaelena9308 6 ай бұрын

I'm glad it helped you! :D

@kwasi8903 6 ай бұрын

Great and simple video. I love it

@user-mc4sk1dz3d 6 ай бұрын

thank you very much, this was very helpful.

@iyliaelena9308 6 ай бұрын

Happy to know that!

@sitiaesyahmohdsalleh7971 7 ай бұрын

please post more, this video really help meeeee

@iyliaelena9308 6 ай бұрын

Glad it helps!

@pulchowk_padhne_keto Ай бұрын

@@iyliaelena9308 please post more videos

@muhammedshanavaschirayathhydro 8 ай бұрын

❤❤

@ihsan5278 8 ай бұрын

Thank you madam

@iamtusshu 8 ай бұрын

Thanks from heart mam❤

@noobsaibot7341 8 ай бұрын

thanks but why we include the Patm in the equation

@iyliaelena9308 8 ай бұрын

Because the question asked to find the total pressure, which includes Patm.

@zaynzayn1 9 ай бұрын

❤

@stevenkanguya5087 10 ай бұрын

EVERYTHING IS ON POINT 💪💪👏👏 AM IN LOVE WITH YOUR VOICE 💕

@mohsinashfaq101 10 ай бұрын

Amazing explanation , but could anyone tell me why we took the resutant force to be acting at the centroid of the figure (hc), and not the center of pressure(hp)?

@taihanhussain6656 3 ай бұрын

The formula is F= gamma x hc x Area

@user-jo7yd4bd5u 11 ай бұрын

very valuable, thanks

@user-nw1lo6cq7i 11 ай бұрын

Helped me a lot .I fell sry for that you are not getting support but keep going you are doing really good work mam.❤

@iyliaelena9308 11 ай бұрын

Thank you, you're very kind.

@greengo360 Жыл бұрын

You are really doing a good job ❤❤❤❤❤❤

@iyliaelena9308 Жыл бұрын

Thank you for the generous compliment. I'm glad that it helps you. :)

@user-bq6or9sx2k Жыл бұрын

why is v2 subtracted from v1 is it a special case when using specific volumes?for the first case

@iyliaelena9308 Жыл бұрын

You can keep it as (v2 - v1) but that would give a negative answer, which is totally fine; it simply indicates a compressive work. The solution referred did it the other way to yield a positive magnitude (because it's known that the piston is compressed).

@abdulsamadafolabi3189 Жыл бұрын

still dont get the draft part

@siyumahmed9479 Жыл бұрын

Thank you madam . I have completed your thermodynamics playlist . You teach incredible. Would you please upload more class on chapter 6, 7 ,8, 9 and 10.

@sangachidam3219 Жыл бұрын

Great videos. do you have chapter 5 videos?

@virginianahudan7140 Жыл бұрын

🎉🎉🎉🎉 thank you so much this help me a lot, better than the explanation of my professor

@que9089 Жыл бұрын

Thank you❤

@narendradc2402 Жыл бұрын

Excellent teaching, You keep referring to virtual class, is there videos on the virtual classes. Thanks for good work.

@iyliaelena9308 Жыл бұрын

Thank you for your generous comment! These videos were meant for my college students back when the pandemic hit. But I'm happy that they are helping others too! I did record some of the virtual sessions but the quality wasn't that good.

@DimilAbdullah Жыл бұрын

hai nak tnya mana next vid?

@AliAli-bp3dk Жыл бұрын

Thank you for explanation

@nabiyevali Жыл бұрын

in question 1 we should have negative boundary work -22.19kJ, why you took it positive?

@iyliaelena9308 Жыл бұрын

Yes, you are right. But it is also correct to write it as 22.19 kJ and state that it is compression. Whether the value of the final answer is negative or positive depends on your equation (v1-v2) or (v2-V1), and whether v1 or v2 is the larger value.

@franklinarboladora9493 Жыл бұрын

How to solve the initial and final specific volume in this problem?

@deadlysilent7120 Жыл бұрын

the work should be negative because it is compression

@iyliaelena9308 Жыл бұрын

@clevelandlloyd6476 Жыл бұрын

p♥r♥o♥m♥o♥s♥m

@claudyajohn9442 2 жыл бұрын

This was really helpful. Thank you!

@4thlaw123 2 жыл бұрын

madam why you have taken Moment of inertia of Rectangular shape while it is a prism shape ?

@iyliaelena9308 2 жыл бұрын

The triangle shape is just it's cross-section. It's not in contact with the fluid. If you look at it from the side, the surface that is in contact with water (the inclined surface) is a rectangular wall. Try to sketch the 3D.

@4thlaw123 2 жыл бұрын

@@iyliaelena9308 Thank You

@judeugwu4987 2 жыл бұрын

Instead of using P1V1, I used RT instead and found the specific boundary work to be 140.45kJ/kg. Is this also correct?

@josephisrael8959 2 жыл бұрын

If the cylinder's volume was 60% at the final state, why wasn't the 60% figure also used in part a?

@iyliaelena9308 2 жыл бұрын

Because for part a, the moveable piston head does not reach the stops.

@deadlysilent7120 Жыл бұрын

the pressure would change if it had reach the stops. but then in part A the pressure is still 1mPa so neglect the 60%

@sangachidam3219 2 жыл бұрын

excellent

@ahmadfaizal2774 2 жыл бұрын

hi how can i contact you miss elena?

@iyliaelena9308 2 жыл бұрын

Hi! You may send me an email at [email protected].

@ahmadfaizal2774 2 жыл бұрын

hi how can i contact you?

@nuramelia4766 2 жыл бұрын

Hi madam, I'm not your student, but I came across your video as I was searching for this topic on youtube. and Alhamdulillah I can understand your videos well :D thank you semoga halal ilmu saya :) ☺but there is one part that I am a bit blur on that last practice, about the formula of h2 and h1. seems like I can't recall which formula is that? Mind to explain madam? Thank you 😊

@iyliaelena9308 2 жыл бұрын

Hi! Thanks for watching. I'm happy that my videos help. Could you please specify your question based on the video (minutes and seconds)? I'll answer your question but I'm not sure which one you refer to. :)

@nuramelia4766 2 жыл бұрын

@@iyliaelena9308 Oh I’m sorry. 😅 thank you for replying me madam :) from this video it’s on practice question 6.4, which is on minutes 27.13 until 27.15. It is the last practice on this video. Based on your solution finding the mass flow rate of the refrigerant, can I know which formula that you’re using for mR=QL/h2-h1 ?? How do we get h2 and h1 ?

@iyliaelena9308 2 жыл бұрын

@@nuramelia4766 If you're talking about the formula mR=QL/h2-h1, that's from the general energy balance eqn i.e. Q = m(h2-h1) ---- this is eqn is applicable at any point to find the change in energy (in this case, heat, Q) when you have two points like inlet and outlet to a device (in this case, the evaporator) If you're referring to the values h1 and h2, that's from the property table (refrigerant tables A-11, A-12 and A-13).

@nuramelia4766 2 жыл бұрын

@@iyliaelena9308ohh I understand it now madam! Thank you for your very much clear explanation😇 may Allah make everything easier for youu.