Posted by Bill on .
Assuming that the smallest measurable wavelength in an experiment is 0.330 fm (femtometers), what is the maximum mass of an object traveling at 157 m·s^–1 for which the de Broglie wavelength is observable?
mass = ? kg

Chemistry 
DrBob222,
wavelength = h/mv
Substitute wavelength (in meters) with v = m/s and solve for mass in kg. 
Chemistry 
Anonymous,
I don't get the equation.

Chemistry 
Anonymous,
Assuming that the smallest measurable wavelength in an experiment is 0.650 fm (femtometers), what is the maximum mass of an object traveling at 563 m·s–1 for which the de Broglie wavelength is observable?