Physics 34.1 Bernoulli's Equation & Flow in Pipes (7 of 38) Relative Pipe Roughness

[@neatmachine]

Good demonstration of confirming proper units. Recommend always including units when writing equations.

[@MichelvanBiezen]

Well taken. From experience, there are pros and cons. I some cases, including the units are imperative. They can also reveal if you may have sone something wrong if they don't match. But they also tend to clutter the equations and take more time to include, impeading the flow of thought. In those cases I prefer to leave them out, especially when we already know the equations we are using will give us the correct units.

[@gelomelo3426]

Amazing explanation 👏 👌 everything clear. Thank you so much. Very useful. God bless you and I really appreciate you sir 🌹🌹🌹

[@MichelvanBiezen]

Thank you. Glad you like the fluid dynamics videos. 🙂

[@vaggs75]

Thanks for the video! You should mention that the answer to the video is located in the previous video, because in this video we don't get what the friction factor is!

[@MichelvanBiezen]

Good point. These videos were meant to be viewed in order published.

[@ivanjeremyabila1980]

can i ask where did you get the table of constant permittivity's shown

[@MichelvanBiezen]

I can't remember, but try the "engineering toolbox". That site has an enormous amount of this type of information.

[@saipriyasamanta100]

Actually relation between rp and time varies inversely

[@jrayk8959]

amazing! Thank you so much

[@MichelvanBiezen]

Thank you. Glad you found our videos. 🙂

[@nithin4441]

D is should internal diameter of the pipe.hence the valve should be less than 6”

[@MichelvanBiezen]

Pipe sizes are given in inside diameters, as a standard. Off course given diameters are nominal values and could differ from actual values.

[@PERALTAMICHAELJUDEL]

is the Iron Cast Pipe roughness is 0.26mm?

[@MichelvanBiezen]

Iron Cast Pipes come in all types of "roughness", and you need to adjust the equation, depending on which pipe you use.

[@PERALTAMICHAELJUDEL]

@@MichelvanBiezen thank you

[@jwhelpdesk1669]

good explanation thx

[@MichelvanBiezen]

Thank you. 🙂

[@murphy98969]

Sir could you plzzz make a video on multipole expansions in electrodynamics i am not saying for the mathematical stuff just only for intuition real meaning of multipole bcouse i am bit confused how a simple continuous charge distribution can behave as dipoles and quardupole when observed by large distances ???

[@canman5060]

Sewer design in Public Work Engineering.

[@MichelvanBiezen]

That is indeed a good application. 🙂

[@yanuarmega8601]

Why 25,4 ?

[@MichelvanBiezen]

1 inch = 25.4 mm

[@yanuarmega8601]

Okey thank you , mr