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.
Pessimism is a mental attitude. Pessimists anticipate undesirable outcomes from a given situation which is generally referred to as situational pessimism or believes that undesirable things are going to happen to them in life more than desirable ones. Pessimists also tend to focus on the negatives of life in general or a given situation.