Una sola Loseta de piso Mide 8 pulgadas Con de cada lado. Si has losetas se ponen Lado
a lado. ¿ Que distancia en metros puede cubrir una
Fila de 20 Losetas?
​

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.

the answer is the last option

explanation:

because in order to know what the molecule is you need to know how many atoms of each element are in the molecule.