A, Lenz' Law. There need to be a difference of flux, so if you use AC you will get a current too.
Answer:
3d shape is the shape of solid
C. A mechanical wave generally travels faster in gases than liquids.
Answer: Strength of magnet and distance from magnetic material
Explanation:
The potential energy of a magnet is determined by the strength of the magnet and the distance between a magnet and another magnet or a magnetic material. Magnetic materials are materials that would be attracted when brought close to a magnet, example of magnetic materials are most metals.
The answer is C, because the water molecules are evaporating and the salt molecules are staying the same.