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Old Mar 31st 2019, 12:28 PM   #1
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Help electrostatics - electric field(beginner level)

The figure below shows three electric charges q1, q2 and q3 that are located at distances of r1= 2 cm, r2= 2cm and r3= 1cm from the origin of the coordinate system, as shown in the figure. Knowing that θ1 = θ2 = θ3 = 30, q1=1mC,q2=3mC and q3=-2mC. Consider: 1/4πξ = 9x10 ^ 9 Nm / C, and determine: a) the electrostatic potential at the origin of the coordinate system. b) the electric field modulus of the charge q2 acting on the charge q3.
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