2. A ring of radius R has a non-uniform linear charge density A cos (0) 0...

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2. A ring of radius R has a non-uniform linear charge density A cos (0) 0<0<π, Ao sin (0) π < 0 < 2π, where is measured as shown in the figure and Ao is a positive constant. X(0) = (a) What is the net charge of this ring? (b) Find the electric field at the center of the ring. 2. A ring of radius R has a non-uniform linear charge density A cos (0) 0<0<π, Ao sin (0) π < 0 < 2π, where is measured as shown in the figure and Ao is a positive constant. X(0) = (a) What is the net charge of this ring? (b) Find the electric field at the center of the ring.