Coulomb's Law Example # 1

[kirsten]

Wow these videos are freaking great. Please don't take these down these are so helpful. I'm taking physics 2 (electricity and magnetism) and I tutor in other subjects. I'm sharing this channel with everyone I can.

[lilmiscuti]

Shouldn't there be some kind of shielding effect from charge 2 before the attractive effects are felt between charge 1 and 3?

[GoodbyeRubyTusday]

I cannot understand why the minus sign gas disappeared from q1 and q2 c.c p.s thank you so much for the help, you are awesome!!