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iron, nickel and cobalt

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How are electromagnets used in recycling metals?

Electromagnets are used in recycling metals to separate ferrous metals from non-ferrous metals. When a magnet is applied to a mixture of metals, only the ferrous metals (which are magnetic) are attracted to the magnet. This allows for efficient sorting and separation of different types of metals for recycling purposes.


Why are two different metals used to make a bimetallic strip?

Two different metals are used to make a bimetallic strip because each metal expands and contracts at different rates when heated or cooled. This difference in thermal expansion causes the strip to bend, making it useful in applications such as thermostats and thermal switches.


What are the main properties of the metals used to make a fuse?

The main properties of the metals used to make a fuse include low melting point for easy melting under high current conditions, high conductivity to allow electric current flow, and good thermal and electrical stability to ensure reliability and safety during operation.


What metals are rigid?

Metals such as iron, steel, and titanium are known for their rigid properties. These metals are widely used in structural applications where strength and durability are essential.


Which two metals are used in a bimetallic strip?

The two metals commonly used in a bimetallic strip are steel and copper. These metals have different coefficients of thermal expansion, causing the strip to bend when heated or cooled due to the uneven expansion and contraction of the metals.