Adisk of radius 2.6 cm has a surface charge density of 6.0 µc/m2 on its upper face. what is the magnitude of the electric field produced by the disk at a point on its central axis at distance z = 18 cm from the disk?

If you give me the two excerpts to compare, i would be able to you : )

Afirefighter is a rescuer extensively trained in firefighting, primarily to extinguish hazardous fires that threaten life, property and the environment as well as to rescue people and animals from dangerous situations.  just cut some parts to make them shorter and add some of your facts or what describes them most. or what they are supposed to do.