Two thin isolated concentric conducting spheres of radii

Question

Solve the all parts of given question:

Question: Two thin, isolated, concentric conducting spheres of radii 4.50 cm and 6.20 cm, have net charges of 34.00 nC and 12.50 nC, respectively.

Part A: What is the electric field at 1.350 cm from the center of the spheres?

Use the sign of the field to indicate direction, thus a positive electric field would point away from the center of the spheres.

Part B: What is the electric potential at 1.350 cm from the center of the spheres?

Part C: What is the electric field at 5.265 cm from the center of the spheres?

Part D: What is the electric potential at 5.265 cm from the center of the spheres?

Part E: What is the electric field at 8.000 cm from the center of the spheres?

Part F: What is the electric potential at 8.00 cm from the center of the spheres?

This is a physic question, reply as soon as possible. Thanks.