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[20 points] A single isolated point charge is carrying a charge q = 3 [nc]. As shown in the figure, two equipotential surfaces consist of two spheres centered on the point charge : o Sphere 1 of radius r₁ = 1 [m]. o Sphere 2 of radius r2 > 1 where r2 is unknown. 1) [5 points] Find V₁, the electric potential on the surface of Sphere 1. V₁ 27 [V] 2) [10 points] If Sphere 2 is separated from Sphere 1 by a difference of potential AV = 86.7 [V]. q --Sphere2 Sphere1 12 1 Find 72, the radius of Sphere 2 (Type the detailed solution to this question in the below box, Show all your calculation steps by typing in the box). | 3) [5 points] Find the work required to bring an electron (qe = -1.6 x 10-19) [C] from Sphere 2 to Sphere 1 considering that AV = 86. 7 [V]. W= -1.387E-17 [J]