0
Outdoor spigots are always threaded and not soldered on.
CPUs are not normally soldered to motherboards. They plug into a socket that's soldered to the board.
Soldered joints will have a higher resistance if the joint is not a clean solder joint. Badly soldered joints are classed as a cold solder joint.
<<>>
...for what? Application matters here.
Tungsten rings can not be soldered at all due to its high melting point and hardness.
NO