if johns baseball has a uniform acceleration of 11.18 m/s squared at time t=3 what should it’s acceleration measure at time t=5

see earlier answer

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.