John F. Kennedy was the US president during the Cuban Missile crisis General Secretary of the USSR was Nikita Krushchev and Fidel Castro was the Cuban ruler involved in this â¦ crisis.
What is the metal used for most electrical wiring and water pipes? Copper is the most common metal used in electrical wires because it has a structure which includes freely-moving negatively-charged particles-called electrons-which are es â¦ sential for the conduction of electricity.
Copper pipes come in three different sizes â type M, L, and K. Type M has very thin walls, while type L is of medium thickness, and type K is the thickest of the three. Stainless steel pipe is less commonly used than other metal pipes, as it is more expensive and harder to find.