can u help me? tnx An oceanographer is studying how the ion concentrationin sea water depends on depth. She does this by loweringinto the water a pair of concentric metallic cylinders(Fig. P27.68) at the end of a cable and taking data todetermine the resistance between these electrodes as afunction of depth. The water between the two cylindersforms a cylindrical shell of inner radius ra, outer radius n,and length L much larger than . The scientist applies apotential difference AV between the inner and outersurfaces, producing an outward radial current I. Let prepresent the resistivity of the water. (a) Find theresistance of the water between the cylinders in terms of L,p, Ta, and . (b) Express the resistivity of the water interms of the measured quantities L, ra, V. AV, and I.Figure P27.68

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An oceanographer is studying how the ion concentration in sea water depends on depth. She does this by lowering into the water a pair of concentric metallic cylinders (Fig. P27.68) at the end of a cable and taking data to determine the resistance between these electrodes as a function of depth. The water between the two cylinders forms a cylindrical shell of inner radius ra, outer radius , and length L much larger than 7,. The scientist applies a potential difference AV between the inner and outer surfaces, producing an outward radial current L Let p represent the resistivity of the water. (a) Find the resistance of the water between the cylinders in terms of L, p. Ta, and . (b) Express the resistivity of the water in terms of the measured quantities L, ra, , AV, and I. Figure P27.68