Question

4: Model a water molecule as 2 hydrogen atoms and one oxygen molecule at the ends of an equilateral triangle with sides of length 10-10m. (14 pts) A) Calculate the moment of inertia of this configuration about the center of the triangle. This requires a bit of geometry to get the distance from the ends to the center. (5 pts) B) Calculate the energy and wavelength of a photon released in the 1-2 to 1-1 tran- sition the l-10 to 1-9 transition, and the 1-100 to 1-99 transition. What portion of the electromagnetic spectrum do these correspond to? (8 pts) C) Is water likely to absorb an optical photon? (1 pt)

Answer 1

2 i tr

10구 9 160 → 99 100-45 mm MI CYowavre