I)with the aid of an appropriate diagram, explain the various signals which are generated when a focused beam of electrons strikes the surface of a polished section. what are each of these signals used for in mineral analysis? ii explain the origin of back-scattered (be) electrons and why they are particularly useful in analysing minerals a gold ore contains native gold, pyrite and quartz. explain how you would distinguish them on an sem screen using be electrons. i) what is the difference between characteristic x-rays and background radiation (bremmstrahlung)? explain the origin of ka, kb and la x-rays

a, c, d, e are all applying about success strategies.

i just did an experiment like this in my science class. also the answer is yes, it will get separated because they are two opposites meaning if they are opposite they can not attract.

hope this .!

electromagnetic shielding is the practice of reducing the electromagnetic field in a space by blocking the field with barriers made of conductive or magnetic materials. shielding is typically applied to enclosures to isolate electrical devices from their surroundings, and to cables to isolate wires from the environment through which the cable runs. electromagnetic shielding that blocks radio frequency electromagnetic radiation is also known as rf shielding.

the shielding can reduce the coupling of radio waves, electromagnetic fields and electrostatic fields. a conductive enclosure used to block electrostatic fields is also known as a faraday cage. the amount of reduction depends very much upon the material used, its thickness, the size of the shielded volume and the frequency of the fields of interest and the size, shape and orientation of apertures in a shield to an incident electromagnetic

from wikipedia