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A -2 nC charge is located at x = 1 m, a 4 nC charge is...

A -2 nC charge is located at x = 1 m, a 4 nC charge is located at x = 3 m.

Part A - Where along the y-axis is the electric potential, VV, zero?

A 300 m long copper wire, of resistivity, ρρ, 1.68 × 10-8 Ω·m, has a cross sectional area, A⃗ A→, of 5.26 ×10-6 m2 and carries a current density, J⃗ J→, of 3.802281 × 106 A/m2.

Part B - The power, PP, dissipated in the wire must be:

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