An infinite cylindrical rod of radius, r, oriented along the z-axis has both a volume charge density, rho = rho0 s r, that only depends on the radial distance, s, and a surface charge, λ = λ0, so that the entire rod is electrically neutral. note: s, ϕ and z are the coordinates in the cylindrical coordinate system. (a) determine the magnitude and direction of the electric field in all regions of this system. explain all of your assumptions. (b) determine the potential difference between a point along the z-axis and a point on the surface of the rod, i. e. calculate v[s = r] - v[s = 0].

answer;

d. are made mostly of liquid

explanation;

-the general   composition and structure planets includes; they have a thick gas and liquid layer covering a small,solid core. mostly the gases are hydrogen and helium atmosphere and layers of liquid hydrogen. for instance neptune and uranus are examples of the outer planets, they have a core covered by ice and ammonia.

-neptune's atmosphere is hydrogen and helium with a bit of methane so there is no oxygen to breath and the interior is made up of frozen water and ammonia with a rock and iron core. thus, there is no liquid water or solid surface to survive.

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pretty sure it's false