025 (part 1 of 2) 10.0 points A coaxial cable with length ( has an inner conductor that has a radius a and carries a charge of Q. The surrounding conductor has an inner radius b and a charge of -Q. +Q Q What is the electric field halfway between the conductors? Assume the region between the conductors is air. The linear charge den- sity A = A 1. E = T EOT 2. E 2 TT EO T Q 3. E= A 4. E = ic 5. E- he ATEOT6. E= 7. E = Q 8. E = * to r2 9. E=- Q 10. E= Q 026 (part 2 of 2) 10.0 points What is the capacitance C of this coaxial cable? 1. C= In 2. C= - 2 k, In 3. C=- ke In 4. C= - k. In 5. C=- k. In 6. C= 2 k. b 7. C=. kel 8. C=- 2 In 9. C=- &, In 10. C= 2 KE 027 10.0 points Calculate the energy stored in an 8.7 /F capacitor when it is charged to a potential of 71 V. Answer in units of m.J. 028 10.0 pointsYou are asked to design a parallel-plate ca- pacitor having a capacitance of 1.06 F and a plate separation of 1. 18 mm. Calculate the required surface area of each plate. The permittivity of free space is 8.85 x 10 2 0-/N . m Answer in units of ma