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3. A line is uniformly charged with positive charge. This line of charge has a constant...

3. A line is uniformly charged with positive charge. This line of charge has a constant linear charge density of 84 C/m and extends along the positive y axis from 0 to L=8 cm. The electric field at position a=2 cm along the positive x axis makes an angle with it. Calculate such an angle (in degrees). (Coulomb’s constant k = 1/4πε0 = 8.99 × 109 N ∙ m2/C2).

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