While undergoing a transition from the nn $=1$ to the nn $=2$ energy level, a harmonic oscillator absorbs a photon of wavelength $7\mathrm{.}70$ mm$.$ What is the wavelength of the absorbed photon when this oscillator undergoes a transition from the nn $=2$ to the nn $=3$ energy level? What is the value of k$/$m$$k$/$m$,$ the angular oscillation frequency of the corresponding Newtonian oscillator?