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Physics 11 Online
OpenStudy (anonymous):

A line of positive charge is formed into a semicircle of radius R = 56.9cm, as shown in the figure below. The charge per unit length along the semicircle is described by the expression λ(θ) = λ0cosθ. The total charge on the semicircle is 12.6uC. Calculate the value of the constant λ0

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