Un auto va frenando y reduce su velocidad de 54 km/h a 25.2 km/h, al recorrer 90 m. Calcula: (a) ¿Cuál será su aceleración, (b) Qué distancia recorrerá antes de alcanzar el reposo, si la aceleración es constante?

according to jean piaget, in what stage of cognitive development are children able to understand conservation task?

b. preoperational

just took 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.