A permanent magnet picks up an iron nail, magnetizing the nail. How is this system different from an electromagnet?

This energy transformation diagram represents the energy of a skateboarder moving along a half-pipe. as she skates toward the top of the half-pipe, her original kinetic energy is converted to potential energy and friction. how much of the energy is potential?

What do scientists use a scientific law for?

Acar going 30 m/s to 70 m/s in 10 seconds calculate the acceleration of the car