An air-filled cylindrical inductor has 2800 turns, and it is 2.9 cm in diameter and 28.5 cm long table part a what is its inductance? express your answer to two significant figures and include the appropriate units, nl ha value units l= request answer submit part b how many tums would you need to generate the same inductance if the core were filled with iron of magnetic permeability 1200 times that of free space? express your answer using two significant figures ? να ασφ turns n

answer and explanation;

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.

the answer is the first electromagnet (a). this is because it has more coils around the ferromagnetic material. increasing the number of coils increases the surface area in which the metal interacts with the current in the coil. this enables more atoms in the metal to become aligned hence becoming more magnetized.