At least ten feet thick. This would depend on the weapon used to fire the bullet - an airgun pellet wouldn't require much of a wall, whilst an armour-piercing round from a high-velocity rifle would require a very thick one.
thick.
Fudi
normal bacteria range from 0.1-10 micrometers. An e. coli for example is approximately 2 micrometers long and 0.5 micrometers thick.
Very thick, 3-5 feet thick.
Thick Filaments
It is how thick a bullet is, measured through the thickest part of the bullet, from one side to the other.
If it is sufficiently thick.
Bullet
depends how thick the platinum is
It is not bulletproof. If it is thick enough it can slow down or stop a bullet depending on caliber.
It depends on how thick the Kevlar vest is.
thick.
If you mean the jacket, it all depends on the caliber and maker.
An AK-47 can put a bullet through a 1/4 inch thick part of titanium, so anything around 2 inches or thicker should stop a bullet, it depends on how powerfull the gun is, but the thicker the titanium the better, if i wanted a sheet of bulletproof titanium i would make it at least 5 inches thick if not 6 inches.
6cm
THIS DEPENDS ON TYPE OF WOOD AND HOW DRY IT IS, A 2 INCH THICK TREE( WET) WOULD PROBABLY STOP THE BULLET
Noop. Even if you had a bullet that was attracted to a magnet (like an iron bullet), it would have too much kinetic energy to be effected. I guess if you had a really big and thick magnet, it could stop a bullet, just like a book can sometimes stop a bullet. This has nothing to do with magnetism, but just the interaction of mass.