They pick up only certain materials and can be used to separate them.
There are several types of toxic waste that can be recycled safely, which reduces the amount of harmful materials in landfills. One of the more useful things to be recycled and sold relatively cheaply is paint.
It can be melted or burned . If it's useless it's burned ,but if it's useful it can be melted and then it can be recycled.
Magnets are useful because they create a magnetic field that can attract or repel other magnets or magnetic materials. They are commonly used in various applications such as electronic devices, motors, generators, and medical equipment. Magnets also play a role in everyday items like refrigerator magnets and magnetic clasps.
because fridges are magnetic and for decoration
It is useful for separating 26 from 28
Electromagnets are useful because some machines need magnets that can stop being magnetic. In junkyards, some machines need to pick up metallic objects, so they need magnets that can turn on and off, which is where a electromagnet becomes useful.
Crystallization and recrystallization can be useful.
The ends of an electromagnet that are useful are called the poles. There are two poles: the North pole and the South pole, which determine the direction of the magnetic field. The poles play a key role in how electromagnets interact with other magnets and magnetic materials.
No.If you break the magnet, it is still a useful magnet.
Electro magnets can be very useful to carry heavy loads of iron and metal from one side of a factory to another. Electro-magnets are formed by shooting electricity through a coil of copper.
Water because it needs to be same to use
Harmful materials are substances that can cause damage to living organisms or the environment, such as toxic chemicals or pollutants. Useful materials are substances that have practical value or serve a useful purpose, like building materials or medicine.