Dos recomendaciones que debes tener en cuenta para tu rendimiento fisico al practicar deporte dos recomendaciones relacionadas con la alimentacion para praticar este deporte

es natacion

u

Explanation:

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d) the number of neutrons plus the number of protons

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.