Keith's Solution to Problem 193

Capacitor plates at small angle θ

[@kikikimono]

You're a real physicist, may you be blessed, ameen 💗.
Lots of love from kashmir

[@KeithandBridget]

Thanks for posting. Hope your trip down under is going well. Keith

[@trickyepithet9122]

mm.. i forgot to expand the log(1+x) term.
Pls keep going with this series, i've been solving from the past three problems and i love it!

[@just_a_random_dude8396]

you have a special place in all our hearts ❤ With love from India 😃

[@NauleshGiri-mq5zc]

Love from Nepal🇳🇵 for awesome prof.

[@luisaparecido5885]

Thenk you Dr Walter

[@muhammadismail2300]

Your book was finally translated to arabic
I ordered it of course
Can’t wait to read it despite I already read the English version 😄

[@lecturesbywalterlewin.they9259]

super thus it now has been translated in 20 languages

[@_Exusiai_]

Sir your old video make me love physics I hve been running from physics for like all of my past but after watching sir dedication it make me completely fall for physics thnks you very much from my heart I am a NEET aspirant from Indian and I hope I will get flying colour on physics

[@louderthanbombs-go7sg]

wonderful sir

[@Timetostudyscience]

Thanks 🙏 sir
Sir you are senior teacher
Thanks

[@Wut_content]

Hats off to him for still being here explaining us Physics

[@mdreugen]

Just a small comment. If I remember correctly e was first discovered by Jonas Bernoulli when analyzing the compound interest rate.

[@KeithandBridget]

I agree it was. But apparently Euler extended it from e^1 to e^x

[@lecturesbywalterlewin.they9259]

@@KeithandBridget *Euler's eq is my favorite of all math.* *e^iφ=cosφ+isinφ thus e^iπ=-1*
,

[@The_Green_Man_OAP]

​​​@@lecturesbywalterlewin.they9259
The logarithmic spiral 🐚 equation is very interesting too... 🤔
_Spira mirabilis_
_Eadem mutata resurgo_

[@SivaKumar-mu5pj]

Can there be an electric field even if net charge is zero? If yes, how electric field and electric flux are connected in this case? Please clarify, sir.

[@mohamadalimokadem1375]

Yes, for example in the case of a dipole the net charge is zero and you still have an electric field (that decays rapidly away from the dipole)

[@grace_chaulagain]

Really great video❤️. I’m a high school student and a physics enthusiast always inspired by your videos. I would love to learn more about capacitors. Do you have specific lectures regarding it ?

[@KeithandBridget]

Look at Walter's 802 lectures. Start with Lecture 1 and take your time working through them in sequence. Electricity and magnetism is not easy but it is hugely important. Also keep up with your mathematics, you will need it.

[@grace_chaulagain]

@@KeithandBridget🙏thank you mate. That helps a lot

[@NitinKumar-ny7rk]

Good evening sir.

[@The_Green_Man_OAP]

🙇☺️

[@michaelbruning9361]

Perhaps when you look at the electric field lines in the drawing on the left, you should think about why they are not physically straight.

[@pranavsharma5184]

Hello Sir, please answer this query of mine.
Can the contact angle of capillary tube change from the specified value in the intermediate state of rising up?
(Query from JEE Advanced 2019 Paper 2 question)

[@lecturesbywalterlewin.they9259]

answers of JEE Advanced exams are published in India

[@pranavsharma5184]

@@lecturesbywalterlewin.they9259 Sir, the proper solution is not mentioned anywhere. My doubt is specifically regarding two capillary tubes placed above one another. In case of insufficient length of one tube, will the water rising in the tube will cross the interface or would the meniscus adjust it radius on the interface for balance?

[@72151]

The solution looks overly complex to me

[@SkyLightsUXOs]

Are all of you smart people really from this planet ?

[@KeithandBridget]

No. I'm from the planet "Watch WL's Lectures". :)

[@ani-sasuke-me_way7.]

May be 1st comment 😢