You are working on charge-storage devices for a research center. your goal is to store as much charge on a given device as possible. the facilities allow you to generate almost any potential difference v you need, but you are restricted to using a single parallel-plate capacitor. the area and separation distance of the plates are fixed, and the dielectric materials available to you are paper (κ = 3.0, emax=4.0×107v/m), mylar (κ = 3.3, emax=4.3×108v/m), quartz (κ = 4.3, emax=8×106v/m), and mica (κ = 5, emax=2×108v/m). part a what properties of these materials must you consider in choosing the best dielectric for your needs? check all that apply. check all that apply. mass density dielectric constant breakdown threshold electric conductivity submitmy answersgive up part b rank the materials in order of their ability to meet your needs, first choice first. rank the materials from the most appropriate to the least appropriate. to rank items as equivalent, overlap them. paperquartzmicamylar least appropriatemost appropriate the correct ranking cannot be determined.