1. The problem statement, all variables and given/known data Atomic nucleus consists of nucleons. What velocity (order of magnitude estimate) will a nucleon have inside a nucleus? 2. Relevant equations [itex]\lambda[/itex] = h/mv v = h/m[itex]\lambda[/itex] 3. The attempt at a solution The wavelength of a nucleus is on the order of 10^-15/m, nucleons have a mass on the order of 10^-27 kg, and h is Plancks Constant. If I do a straight plung-n-chug I get that the velocity should be on the order of 10^-22 m/s. It seems reasonable to me, but recently that's been a guarantee that it isn't. So does that look reasonable to anyone else?