There are several different technologies with armor-piercing bullets.
A common one is for the bullet to have a thin core of steel, or other hard metal. Typically bullets have soft lead surrounded by soft copper. When these bullets hit something, they deform, usually increasing their diameter as they penetrate. Most armor exploits this property.
Steel will not deform like lead & copper, and is much more likely to penetrate deeper than a regular bullet.
i do not know about the breaking system but bullet trains work by maglev, or magnetic levitation, to propel
Yes.
The metal would need to be past its melting point to work in a bullet mold. For example, if the metal was stainless steel, the temperature is 1510 degrees Celsius.
I was looking for the answer to that myself also. However I think not, why make something as simple as a bullet that complicated. Also u cannot curve a bullet.
When a bullet penetrates a target, the bullet's kinetic energy will decrease as it transfers some of its energy to the target. The bullet loses energy as it does work to penetrate the target. Some of the energy is also converted to heat due to friction and deformation of the target material.
Properly stored, 4 to 5 decades or more.
The principle with which the bullet train works is the Magnetic Levitation. U can see the following link to know more about it. http://science.howstuffworks.com/maglev-train.htm
Automatic-rifle bullet are usually gas powered and the achieve great speeds by rapidly accelerating out of the rifle, usually in response to a trigger.
no
The function of the bullet train is to move large amounts of people quickly from one point to another. The bullet train improves the efficiency of the transportation system allowing it to serve higher numbers of people.
Rifle and bullet (The bullet is dependent on the rifle to accomplish its purpose)
Little bullet: Bullet BillBig Bullet: Banzai BillGiant Bullet: King Bill