Solve each parts of following question given below:

Question: A solid conducting sphere of radius 2.00 cm has a charge 13.00 µC. A conducting spherical shell of inner radius 4.00 cm and outer radius 5.00 cm is concentric with the solid sphere and has a total charge of -6.00 µC. (Take radially outward as the positive direction.)

Part A: Find the electric field at r = 1.00 cm from the center of this charge configuration.

MN/C

Part B: Find the electric field at r = 3.00 cm from the center of this charge configuration.

MN/C

Part C: Find the electric field at r = 4.50 cm from the center of this charge configuration.

MN/C

Part D: Find the electric field at r = 7.00 cm from the center of this charge configuration?

MN/C

Please help for the above question, completely confused!! Show each steps if possible, Thanks.