Which graph best represents the relationship between the electric current and the rate at which a magnet is turning inside an electric generator?

For the car in the picture ,in which direction is the normal force? -into the screen -down -out of the screen -up

An object resting on a table weighs 100 n. with what force is the object pushing on the table? with what force is the table pushing on the object? explain how you got your answer.

What can you increase the strength of an electromagnet by