A certain elastic conducting material is stretched into a circular loop of \( 12.0 \mathrm{~cm} ...

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A certain elastic conducting material is stretched into a circular loop of \( 12.0 \mathrm{~cm} \) radius. It is placed with its plane perpendicular to a uniform \( 0.800 \mathrm{~T} \) magnetic field. When released, the radius of the loop starts to shrink at an instantaneous rate of \( 75.0 \mathrm{~cm} / \mathrm{s} \). What emf is induced in the loop at that instant?
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