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.
1 Type of Pipe - This is how the pipe is constructed. The pipe could be ERW or Seamless pipe. A less common type of pipe is furnace butt welded pipe.  Significant Figures - Describes how accurate you want the calculation to be.