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Edexcel PHYSICS Doubts

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The Golden Girl =D:
TWO Point charges of + 0.50 micro C and - 0.50 micro C ,from an electric dipole of length 0.12 m

a) Calculate the size of the Force between the charges.

Substituing F = kQ1Q2/r2

F = [(9*109) * (30*10-9) * (30*10-9) ] / [0.25]2

 F = 1.3*10-4 N

I don't get how they came up with the values in Red , they aren't in the Question (green) :-\

{ Unit 4 - Electric fields }  I got this Question from a Book.

Thanks Guys =]

The Golden Girl =D:
^ Anyone ?!  :-\

That's the only Data given by the Question to be honest  :(

Romeesa-Chan:

--- Quote from: ~The Golden Girl~ on October 08, 2011, 07:40:59 am ---TWO Point charges of + 0.50 micro C and - 0.50 micro C ,from an electric dipole of length 0.12 m

a) Calculate the size of the Force between the charges.

Substituing F = kQ1Q2/r2

F = [(9*109) * (30*10-9) * (30*10-9) ] / [0.25]2

 F = 1.3*10-4 N

I don't get how they came up with the values in Red , they aren't in the Question (green) :-\

{ Unit 4 - Electric fields }  I got this Question from a Book.

Thanks Guys =]

--- End quote ---

Not sure ... it's all messed up. =X

The Golden Girl =D:
^ Check your Inbox

Romeesa-Chan:

--- Quote from: ~The Golden Girl~ on October 08, 2011, 08:51:56 am ---^ Check your Inbox

--- End quote ---
I am pretty much useless.

I hope astar can help you out here. (:

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