If you apply a force of 75N to an object and you generate an acceleration of 25 m/s^2. What is the mass of the object? (Use Second Law of Newton)

m = 3 kg

Explanation:

It is given that,

Force applied to the object is 75 N

Acceleration generated in the object is,

We need to find the mass of the object. The force acting on an object is given by the Newton's second law of motion.

Force F=ma

So, the mass of the object is 3 kg.

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.