Coulomb's Law Problems

Physics Ninja looks at 2 Coulomb's Law problems involving 3 point charges. We apply Coulomb's Law to find the net force acting on one of the charges. In the first problem the charges lie along the same axis and in the second problem they form a triangle.

[weapons_check]

This literally helped me more than my actual physics teacher Tysm!

[qudhachure]

by this video, you earned my subscription your awesome mate.

[thameralrbi]

thank you very much, I've watched several videos, yours was the best.

[steves]

Nice video and you explained well.
Just a minor point, it is a bit confusing when you say that when calculating F1 or F2 you don't need to worry if it is positive or negative because that just tells you the direction. Then later you say that the positive or negative for Fnet tells you the direction.

I think it would be clearer to say that the negative or positive for the F1 or F2 indicates an attraction or repulsion.
The positive or negative when calculating Fnet would indicate direction, left or right.

[anastasia]

Very good explanation, thank you, you make me understand

[amanuelendalkachew]

thank you for your clear explanation .from Ethiopia

[Sattamsager]

Thank you so much this helped me so much

[marekamoorosi]

You the best sir💞💞
Was lost but now am focused 💪

[rachelhiltystudenthbhs]

great explanation! thanks for saving my grade

[quakinaspens]

in the second problem after finding the angle 71, do we have to find the reference angle since it is in the second quadrant ?

[redjinndevil]

thank you your 100th comment on this vid love from Pakistan

💓

[christopheravila]

How do you locate q3 given 3charges and d between q1/q2
So far no one in any video has answered this, tired of net forces or magnitude

[syedhunainali]

why you take nagitive sign on net force of x component

[splashmoney]

thank you, u saved my life for the diagnostic test tomorrow.

[ravenousstrike]

Thank you and this will be very helpful for my future tests and topics in Physics 2: Electromagnetic Waves❤!

But i have a question, what is the exact value of 1Coulomb? It is 6.241x10^18 or either +/- 1.6x10^-19? I'm really confused that i cannot make progress about this problem.
And also, if for example there's 2C, should i also multiply it by 2 on either of those 2 on my first question? The answer i get if there's only number of charges instead the value of C is on scientific notation and higher numbers that isn't I expected.

Anyway thanks again for these!

[jpmcfrosty]

Followed this ex down to a tee and its saying my Net Force value is wrong, not sure what else to do. Only difference in my problem is that my q2 is positive and my q3 is negative and it wants my answer in mN's not N. Have walked through 3 different tutors now and none of them we're able to come to the same conclusion. not sure what else to do...

[rubyanneinto]

On the first problem, was it supposed to be 0.135 instead of 1.35 N?

[Aboodinho.]

I am the one who should thank you actually ♥

[sholaibukun]

Sir,
From my calculation the force on q1q3 is0.66N pls do a check
Thanks

[amarakhan]

Why the direction of F2 is towards positive charge? It should be outwards.