# Posts by bab

Total # Posts: 3

**Quantum Physics**

If the first qubit is in the state 2/sqrt(5)|0> - 1/sqrt(5)|1> and the second qubit is in the state 1/sqrt(2)|0> - i/sqrt(2)|1>, what is the state of the composite system? What is HX (1/5|0>+3sqrt2/(5)|+>)?

**Russian**

Russia's historical roots date back to the? A)400s B)600s C)800s D)1000s

**Chemistry**

hy