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Coulomb's law is used to calculate the electrical attraction between 2 charged particles, what formula do I use to calculate an electrical attraction magnitude between 2 plates? Let's assume the first plate holds a charge of +3x10^-4 coulombs and the other one holds the same negative amount of charge (-3x10^-4), both plates area is 5 square centimetres and they are fully exposed and facing to each other. Also let me assume that the distance between them is 2 meters.

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This is a job involving dirty integrals.., do you know integration, that to double integration. –  Mr.ØØ7 Apr 16 '13 at 14:43
    
sadly, yes! I have been asking around but no one could solve this for me so far. That's why I am giving straight forward numbers, maybe someone knows how to work this out! –  Error404 Apr 16 '13 at 14:47
    
Welcome to Physics! Please see our homework policy. We expect homework problems to have some effort put into them, and deal with conceptual issues. If you edit your question to explain (1) What you have tried, (2) the concept you have trouble with, and (3) your level of understanding, I'll be happy to reopen this. (Flag this message for ♦ attention with a custom message, or reply to me in the comments with @Manishearth to notify me) –  Manishearth Apr 16 '13 at 15:22
    
@Manishearth. Hello there. Unfortunately, this is not a homework. I am looking for a formula to estimate an electrical attraction between 2 objects, I don't even know if such a formula exists. Thanks for your help.♦ Would you please unblock the question so people can tell me what they know about this case? –  Error404 Apr 16 '13 at 15:38
    
@error The HW policy applies to HW type questions, they need not actually be homework. You may want to ask in Physics Chat, there are helpful people there. –  Manishearth Apr 16 '13 at 15:42
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closed as too localized by Waffle's Crazy Peanut, Manishearth Apr 16 '13 at 15:22

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