What is the common name of the magnet made by using current​

Apulley with a mechanical advantage of 5 will require you to pull times the amount of rope. a. 1/5 b. 5 c. 10 d. 15

The ability to make things happen is also called a. heat b. force c. matter d. energy

Agust of wind pushes a beach ball with a force of 9 newtons. the ball rolls 10 meters in 3 seconds. what is the power of the wind? 900 w 90 w 30 w 3 w