Thermal Expansion Equations

[@dremm9502]

thank you for your effort

[@rhemanwokemodo5797]

This explanation is great

[@GatwechLuoyRuei]

Great job
I love you ❤️

[@GatwechLuoyRuei]

❤❤❤❤❤❤

[@wieusArt]

Thank for nice explanation 😊

[@charleswanjau2728]

Thanks madam, the concept could not be explained better.

[@ahmadawada5363]

Hello
I have a Question
What is the minimum calculated expansion value that we require to have expansion joint

[@stealthboombox]

Thank you sooooo much

[@indialover8784]

Thanks for the reply but for example when a force is applied on rubber it stretches thereby reducing thickness.

[@aleksaklasnic8776]

how would you determine the individual changes of lengths of the volume if it is not constrained?

[@DrJennCash]

If you have a solid material, you can calculate any dimension of the object using the change in length formula. If the material is a liquid, then you can only find the change in volume but not the length, width, height. For a liquid, the material will expand depending on the shape of the surrounding container. Does that answer your question?

[@deepprakash4841]

great video

[@indialover8784]

during the thermal expansion of a pipe/shell, IS its thickness will change due to its change in length?

[@DrJennCash]

+India Lover The expansion is in every direction. So the length will expand, the diameter will expand, the thickness with expand, etc...

[@hiratagar4069]

How can we do these in 2 mints do have you any trick

[@marwakhalid6559]

It was gonna be better If u showed us an example .but thanks anyways it helped.

[@EPHIT578]

❤❤❤❤

[@helennecastillo7066]

what if the temperature is needed for elongation?

[@DrJennCash]

If you have to find the final temperature, you would rearrange the equation to give Tf = Ti + (delta L)/(Lo alpha)

[@helennecastillo7066]

@@DrJennCash delta L is L final - L initial while Lo alpha is the coefficient right? I’m so sorry I’m not good at this. Thank you for answering

[@DrJennCash]

@@helennecastillo7066 yes (delta L) is the L_final - L_initial also called the change in length. If you know how much the material is expected or allowed to expand, then you have the change in length. Lo is really the same as L_initial but also called the original length. alpha is the expansion coefficient.

[@goner007]

does coefficient of linear expansion depends on length

[@DrJennCash]

The coefficient does not depend on the length or volume of the material. It depends on the material. The change in length will depend on the original length.

[@tendressejf8727]

Can you explain when do we use Tf-Ti and Tf+Ti?

[@DrJennCash]

Tf - Ti with these equations because you want the change in temperature. So if you start at 25 C and go to 75 C, the change in temperature is (75-25) or a change of 50 C

[@psbbiaku640]

if a substance contract means coefficient of linear expansion is negative

[@DrJennCash]

It also depends on the temperature change. Most substances have a positive coefficient of linear expansion, and they will expand when heated and contract when cooled. If a substance had a negative linear expansion coefficient, it would expand when cooled and contract when heated. This unusual behavior is generally confined to a narrow temperature range for a small number of materials.

[@naviitaramro3474]

If its negative what do i do?

[@DrJennCash]

Negative values for the change in temperature mean that it is cooling. These are associated with negative values for the change in length or volume which means that the material is contracting.

[@julesceasar7175]

Example Plss

[@stephenziga2319]

Thanks, but it would have been better if you solved just 1 question with it.

[@fangapaulus8413]

THANKS

[@snehaaljadav6384]

no.1