Question 3 Multiple Choice Worth 2 points) (03.03 MC)What happens when a sound wave moves from water to air?
It slows down.
It speeds up
It stays the same.
It reverses

Ascrew incorporates which other simple machine? lever wheel and axle inclined plane pulley

Part 1: a magnetic levitation or maglev train rides rails without touching them. explain how this works using your data. include the appropriate magnet drawing in your answer. part 2: two objects are near a bar magnet. one is about 1 cm away, while the other is 6 cm away. compare and contrast the magnetic force that affects each object. use your data to answer the question

The material that keeps its new shape after it is stretched is called?