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A 67 m length of coaxial cable has a solid cylindrical wire inner conductor with a di- ameter of 1.929 mm and carries a charge of 11.03 μC. The surrounding conductor is a cylindrical shell and has an inner diameter of9.989 mm and a charge of -11.03 μC. Assume the region between the conductors is air. The Coulomb constant is 8.98755 ×  109 N · m2/C2. What is the capacitance of this cable?

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