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# A straight, nonconducting plastic wire 8.50 cm long carries a charge density of 130 nC/m distributed...

A straight, nonconducting plastic wire 8.50 cm long carries a charge density of 130 nC/m distributed uniformly along its length. It is lying on a horizontal tabletop.

Part a) Find the magnitude and direction of the electric field this wire produces at a point 5.00 cm directly above its midpoint.

Part b) Is electric field directed upward or downward

Part c) If the wire is now bent into a circle lying flat on the table, find the magnitude and direction of the electric field it produces at a point 5.00 cm directly above its center.

Part d) Is electric field directed upward or downward

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