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Edexcel PHYSICS Doubts

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The Golden Girl =D:
Thanks Romeesa =]

Can Anyone help me on this Question please , thanks again =D

astarmathsandphysics:
Will look now

astarmathsandphysics:
i Coulomb =10^-6 C so 0.5 micro coulomb =0.5*10^-6 C.
F=9*10^9*(0.5*10^-6)^2/0.12^2 =0.156 N

astarmathsandphysics:
I don't know how they get the values for the charges. Must be magic.

The Golden Girl =D:
That means it was a TYPO/printing error. Thanks Sir =]

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