A certain part of a flat screen TV has a thickness of 150 nm how many meters is this

Explanation:

The prefix nano means , therefore:

it doesn't. it was imagined up in the middle ages.

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.