What do i think you are?

To see what i think you are out of many thing lol

1 ok we will star easy for ya. What is the direct translation of 'Katana'?
2 what is CO2?
3 what is ozone?
4 which is theoretically faster warp drive or hyperdrive?
5 what does the 'C' stand for in E=MC2?
6 what is RAM in computing?
7 how many degrees in a circle?
8 Alive without breath, as cold as death, never thirsty, always drinking all in mail, never clincking. what am i?
9 and i sci-fi question fo good mesure. What device is capable of forming a stable wormhole to other planets. by the use or a DHD?