Why are electromagnets used in metal scrap yards

Chemical energy is a form of energy. a. heat b. kinetic c. potential d. electromagnetic

Amaterial that provides resistance to the flow of electric current is called a(an) (1 points)

Which is not true of alpha radiation? o a. it increases the number of protons. o b. it has a positive charge. o c. it causes transmutation. o d. it is heaviest of the three types