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The figure below shows a uniform magnetic field \( \vec{B} \) confined to a cylindrical volume of radius \( R \). The magnitude of \( \vec{B} \) is decreasing at a constant rate of \( 11.9 \mathrm{mT} / \mathrm{s} \). What are (a) the \( x \)-component, (b) the \( y \)-component, and (c) the \( z \)-component of the initial acceleration of an electron released at point \( a( \) radial distance \( r=6.90 \mathrm{~cm}) \) ? What are (d) the \( x \)-component, (e) the \( y \)-component, and (f) the z-component of the initial acceleration of an electron released at point \( b(r=0 \mathrm{~cm}) \) ? What are (g) the \( x \)-component, (h) the \( y \)-component, and (i) the z-component of the initial acceleration of an electron released at point \( c( \) radial distance \( r=6.90 \mathrm{~cm}) \) ?

we know that from faradays law ?E?.d?l=?d?