Magnetism is a

a) force.

b) power.

c) form of energy.

d) form of electricity.

The correct answer is "force".

Explanation:

Magnet has two poles: South pole and North pole.

Magnetic field lines are the surrounding around the magnet in which magnetic force can be experienced.

Like poles repel each other. There is force of repulsion between like poles. Unlike poles attract each other. There is force of attraction between the opposite poles.

Magnetism is a force. It is not a power. The power is the rate of doing work.

Magnetism is not a form energy.

Therefore, the correct option is (A).

the box does not move because you need to use a force greater than 300 n. you are only using 50 n. it needs to at least be 301 n for the box to move because then it is an unbalanced force and it will move the way that the greater force is pushing it. if you use only 300 n it will be a balanced force and will not move because the force you are exerting on the   box is the same as its force.

hope this !

im sorry if i went too in depth, i am going to include a link to a video on khan academy that will explain this.   hope that you like the video and that it explains more in detail to you.

that is the link.

helium

oxygen

neon

sodium