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.
3 Reasons Whole Foods Market Inc.'s Stock Could Rise. Investors are pessimistic right now, but they're missing the bigger picture. Two decades ago, investors scoffed at the idea that people would pay a premium to buy food that was certified organic. They simply don't care, the naysayers quipped.