g Consider a monoatomic square array having one atom of mass M at each corner of the unit cell of edge a. Assume that atoms only move in the plane of the lattice and only nearest neighbors interact. Find the normal modes frequencies.

If you chip a tooth, most likely you will go to the dentist to have the missing material filled in. currently the material used to fill in teeth is a polymer that is flexible when put in, yet is hardened to the strength of a tooth after irradiation with blue light at a wavelength of 461 nm. what is the energy in joules for a photon of light at this wavelength?

40dm3 of gas at 760 torr are heated from 5°c to 50°c what is the new volume

What is the correct lewis dot structure for arsenic?