7. Calculate the gravimetric capacitance of a carbon-based electrode with an aqueous electrolyte solution. Assume the surface area of the carbon electrode is 1200 m²/g, and the relative static permittivity of the aqueous electrolyte solution is 80. The permittivity of free space is 8.85 × 10-¹² F/m. Indicate any other assumptions you have to make.

electrostatic potential at a point

Answer the question plus this additional part: In addition use this to find the numerical value of the capacitance per unit length of two long parallel wires, each with radius 1 mm, with their centers separated by 4 mm. Express your answer in picofarads per meter. You may assume the wires are perfect conductors.  Question 2.52 is attached for reference:

1. A parallel plate capacitor, the distance between the two plates is 6 mm, the plate area is 4 cm². The space between the two plates is filled with air, and is given a potential difference of 12 Volts. Determine: a. The capacitance of the capacitor b. The charge on the more positive conductor plate