Physics 35 Coulomb's Law (6 of 8) Example 2B (Challenging Problems)

In this video I will find time=? and velocity=? to reach a point a distance "b" from the alpha-particle.

Next video in this series can be seen atL

[juniorjay]

Jesusss. These videos went from difficulty level 1 to over 9000 fast!

[srinuchandaka]

Thanks man..!!!
You thought different and not all did it.
We expecting more videos like this and we'll always supporting you.
Keep doing more👍👍👍

[shoujiehe]

Very nice material and clearly presented in the video. Only comment/suggestion that I have is to label/name the video clips with key concepts stated that are covered in the video. This is because finding which video has the concepts that I want to review took a lot of time.

[paulcabalar]

In 13:05, isn't that it should be arcsin(u/c), not arcsin(u/c^2)? I calculated it via symbolab and wolfram alpha. Anyway all your videos are great.

[kevinthomas]

Dont we need to change the limits of integration if we're doing a substitution?
(where you did u = (a-x)^1/2)

[harshupadhayay]

michel sir this is an excellent problem
greetings from india

[mulatiedemis]

i think the direction is to negative x axis since it is opposite to the electric field for negative charge

[justinstorm]

in the previous video couldn't you just use the integeral for W in this video, in terms of x instead of a-b. Then you could replace the x with a-b after integrating

[YusufDogan-putu]

I believe this is a math question more than physics

[eliperson]

couldn't you just find the average force applied, divide by the mass of the electron to get the average acceleration, and then use kinematics since average acceleration is treated as a constant? this makes way more sense to me and the calculations were so much easier (and the answer was prettier too). please let me know if this is a valid method!

[mihaly]

This is a great example thank you very much

[lorenzoortiz]

looked like a simple problem at first glance

[PrivacyKingdoms]

this problem is absolutely insane. Would this problem appear in a college physics course? because its definitely not in ap physics c

[ashispandey]

Hello sir, I didn't understand why you integrated limits from 0 to a-b instead of 0 to a-x? you were using a-x for Electrostatic force formula then why not the same for the limit?? please see 10:27 of your video

[arashdeeppanesar]

Couldn't we use a kinematics formula to solve this question? we know v_intial = 0 and v_f = the expression in the previous video, we also know d = a - b. So couldn't we just solve for t using a kinematics equation? The electron is in uniform acceleration too.

[kevinmashilane]

Since we already know the distance between the two charges (q and Q). When calculating F, why is it that we don't directly substitute R with "b" rather that using "a-x"?

[stevedasilvaferreira]

Hi sir, I think your integral is wrong. Used a integral calculator. Please revise, it is confusiñg me.

[KK-odvy]

why did he leave the a as a constant? "6:49"

[Hally]

Is there a way of simplifying arcsin(a^(1/2)/a) - arcsin(b^(1/2)/a) without approximating?

[JoseJimenez-lxmv]

Do you know of some applied problems where we could apply this formula?