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A cylindrical shell of radius 9 cm and length 297 cm has its charge density uniformly distributed on its surface. The electric field intensity at a point 20.1 cm radially outward from its axis (measured from the midpoint of the shell) is 47700 N/C.
Coulomb's constant k=8.99e9 Nm^2/C^2.
What is the electric field at a point 4.43 cm from the axis?
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