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What is the magnitude of the electric field at a point midway between a -6.8microC and a +6.6microC charge 8.0cm apart? Assume no other charges are nearby. Express your answer using two significant figures
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Added Thu, 23 Jul '15
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field due to both charges will add up
Total field= 2* k*q/r^2
=2 *9*10^9 *6.8*10^-6/(4*10^-2)^2
=76500000 N/C

=7.65*10^7 N/C
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Added Thu, 23 Jul '15
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