Anybody wanna zoom? I am bored

Students design a model roller-coaster track. they place a rubber ball at the highest point on the track and let it go. the ball rolls along the track pulled only by the force of gravity. eventually, it comes to a stop. which change to the design will result in the ball moving the greatest distance?

J. j. thomson’s experiment disproved the theory that an atom

How can you increase the strength of an electromagnet?