Copper is used most, for wires and simple contacts; silver and gold and their alloys are most used for switch contacts because when they oxidize (also known as "tarnish") they retain their excellent conductivity much better than does copper.
Copper, Brass and Aluminum.
Various metals, plastic and wood.
The largest use by far for ferrous metals is in various forms of steel and/or cast iron used for manufacturing object and structures.
A circuit board connector is used to mechanically support and connect electronically the various components of a circuit board. It does this using conductive pathways and signal traces.
metal is a hard material which is extracted from ores.There are various metals,with various properts
Lead, plastic. various ferrous and non ferrous metals and glass piping
Metals are extracted from various ores that are mined from underground.
The strings are made up of various metals. I shouldn't see why not.
Valves can be constructed with various materials such as metals and sometimes even plastics. Brass, bronze and steel are some of the common metals used in the construction of valve bodies.
In various places and in various quantities throughout the universe. You need to be more specific.
Conductors are materials that allow the flow of electricty in a circuit. Examples are metals, the two most common used being copper and aluminum.
Coinage is a word to describe coin currency. Coins are nowadays made from various metals.