false, the rusting of iron can be prevented by painting, oiling, greasing or varnishing its surface.
Answer:
protons and neutrons
Explanation:
those particles account for 99.99% of mass
It is an open series circuit and this is why:
its obvious its a series circuit because all the symbols are in a straight rectangle.
its an open circuit because an open circuit has something that doesn't allow the electrons to flow all the way. and the thing blocking the electrons it the switch which is open, (off).
Hope this helped!! sorry its late!!
Uses for radioactive tracers is to look for flaws in metal objects and are also used by doctors to x-ray images to look at your bones.
