5. A van de graaf generator has a metal dome that collects extra charge. If you touch it your hair get some of this charge and will stand on end. What best
explains why this happens?
Opposite charges attract
Like charges repel
Opposite charges repel
Smoke and mirrors

Complete these sentences. if a roller coaster train has a potential energy of 1,500 j and a kinetic energy of 500 j as it starts to travel downhill, its total energy isj. once the roller coaster train gets closer to the bottom of the hill, its kinetic energy increases to 1,100 j, and its potential energy decreases to j. when the train reaches the bottom of the track and is traveling along the ground, its kinetic energy isj.