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2 (3) Consider a wire in the shape of a semi circle of radius 2, given by :02 + y2 = 4 and y 2

2 (3) Consider a wire in the shape of a semi circle of radius 2, given by :02 + y2 = 4 and y 2 0. Suppose the density of the wire is given by a (337 y) : y. (a) Find the mass of the wire. (b) Find the y coordinate of the center of mass of the wire

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