Nancy and Sarah buffered the same feature class of streams and determined the total area. Nancy got 102 km2 and Sarah got 59 km2. Who got the right answer

answer; equivalent to a one(1) horsepower motor;

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.