Asquare loop of wire with sides of length l and carrying a conventional current i lies in the yz-plane with its center at the origin. a. what is the magnitude of the magnetic field due to this loop at a location x on the x-axis?
b. what is the approximate equation for the magnitude of the magnetic field at a location x that is much greater than l , in terms of the magnetic moment of the loop?
c. is the result of part (b) consistent with our previously derived result for the magnetic field of a magnetic dipole?
provide explaination.

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.

i believe the answer is a hope it and is correct