Consider a disk of radius 3.7 cm with a uniformly distributed charge of +5 µC. (part 1 of 4) Compute the magnitude of the electric field at a point on the axis and 3 mm from the center. The value of the Coulomb constant is 8.98774 × 109 N · m2 /C 2 . Answer in units of N/C.

(part 2 of 4) Compute the field from the near-field approximation x ? R . Answer in units of N/C.

part 3 of 4) Compute the electric field at a point on the axis and 26 cm from the center of the disk. Answer in units of N/C.

(part 4 of 4) Approximate the field by treating the disk as a +5 µC point charge at a distance of 26 cm. Answer in units of N/C.