Find the normalization constant a [in equation (6.47)] for the fi rst excited state of a particle trapped in a cubical potential well with sides l. does it matter which of the three degenerate excited states you consider?

The mass of a muon is 207 times the electron mass; the average lifetime of muons at rest is 2.21 μs. in a certain experiment, muons moving through a laboratory are measured to have an average lifetime of 7.04 μs. for the moving muons, what are (a) β (b) k, and (c) p? the rest energy of the electron is 0.511 mev.

Idon’t quite understand this problem

What do elements in a family tend to share. a.) similar periods b.) similar groups c.) similar atomic symbols d.) similar chemical properties and characteristics