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.
pesÂ·siÂ·mism. n. 1. A tendency to stress the negative or unfavorable or to take the gloomiest possible view: We have seen too much defeatism, too much pessimism, too much of a negative approach (Margo Jones). 2. The doctrine or belief that this is the worst of all possible worlds and that all things ultimately tend toward evil. 3.