A direct current is passed through the coils on C-core as shown in the figure below. Draw the lines of force to show the magnetic field around the two magnetic poles in the figure above. Use arrows on the lines of force to show their directions. help will be much appreciated thanks. pls answer asap.

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.