17. Periodic Motion

What are the (a) amplitude, (b) frequency, and (c) phase constant of the oscillation shown in FIGURE EX15.6?

INT An electron is confined in a harmonic potential well that has a spring constant of 2.0 N/m. What are the first three energy levels of the electron?

For the ground level of a harmonic oscillator, $\text{∆}x\text{∆}{p}_x=\text{ħ}/2$. Do a similar analysis for an excited level that has quantum number $$$n$. How does the uncer­tainty product $\text{∆}x\text{∆}{p}_x$ depend on $n$?