Imagine you are on a free-fall style ride, like the one in the book. What would happen to the velocity of the coaster-car when the upward pull of the cable is GREATER than the downward pull of gravity as the car rises towards the top?

probably not the "magnets"in the magnet, so to speak, are thought to be electrons orbiting in shells. vurrent loops two sides to the loop

a lot of it means it can be "burned" for energy and sold at one price. if it is scarce, the price will go up

answer: the metamorphic rocks are formed when they are exposed to high pressure and high temperatures. this happens when one of the earth's plates comes in contact with the other plate by traveling in opposite directions, straight into each other or slipping under one another. the friction that is caused by this activity results in   melting of rocks and when it cools they are known as metamorphic rocks. this process needs a controlled amount of pressure and temperature otherwise it may turn into magma.