Solve the all parts of given question:

Question: A thunderstorm may be considered as dipole with a charge -q at cloud level, h and its image in the Earths conducting surface, +q at a depth of -h. The breakdown electric, filed, which allows an electric discharge to occur is near the ground and at altitudes above the could. If q=200C and h=6km calculate:

Part A: Calculate the electric filed at the ground?

Part B: Calculate the electric filed some distance, z,above, the strom?

Part C: The range of heights where discharges are likely?

Show all work, use additional paper if necessary. Thanks.