Un disco que gira alrededor de su eje, ¿Cuántas vueltas dará en 5s si partiendo del reposo su aceleración angular es de 20 rad/s2? ¿Cuántas
vueltas dará durante el quinto segundo?

i need with 1.3.2 investigate cycling o2 and co2 apex

we need to see it

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.