Waste metal. Electromagnets can be used to separate magnetic materials such as iron and steel from mixed piles of trash. The metals are pulled out by the magnet while nonmagnetic objects such as glass and plastic stay behind.aste metal. Electromagnets can be used to separate magnetic materials such as iron and steel from mixed piles of trash. The metals are pulled out by the magnet while nonmagnetic objects such as glass and plastic stay behind.
The definition of pessimistic is constantly expecting the worst. An example of pessimistic is a person who always believes that something is going to fail. of or characterized by pessimism; expecting the worst.
Definition of 'extremist'. extremist (ÉªkstriËmÉªst ) If you describe someone as an extremist, you disapprove of them because they try to bring about political change by using violent or extreme methods. The country needs a strong intelligence service to counter espionage and foreign extremists.