Asmall ball with charge q = 10.4 μc and mass m = 0.055 kg is suspended from the ceiling by a string of length l = 2 m and is initially at rest. a uniform horizontal electric field e of magnitude 500 v/m is applied to the ball-string system. the ball then begins to move. ignore air resistance.

its c its is a mixture of gases

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.