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.
pessimistic adjective. B2 âthinking that âbad things are more âlikely to âhappen or âemphasizing the âbad âpart of a âsituation: The âtone of the âmeeting was very pessimistic. The âdoctors are pessimistic (= not âhopeful) about his âchances of ârecovery. pessimistically adverb uk us /-tÉª.kÉl.i/.