Answer:
usually x-ray tube filaments are devices that limit the current flow i.e. current cannot easily pass through them or we can say that they are current limited devices. So to allow fine electron transmission control by filament heating current, rhenium must not be used in x-ray tube filaments.
Answer:
its a conductor because it conducts electricity
Explanation:
The answer is b, gravity and friction are forces.
Astronomers give stars names so that they're able to identify and keep track of them more easily.