The de Broglie equation predicts that the wavelength (in m) of a proton moving at 1000. m/s is:

Question

Quizplus · Accepted Answer

The de Broglie wavelength is given by the equation λ = h/p, where h is Planck's constant and p is the momentum of the particle. The momentum of a proton moving at 1000 m/s is p = mv = (1.67 x 10^-27 kg)(1000 m/s) = 1.67 x 10^-24 kg m/s. Substituting this into the de Broglie equation, we get λ = h/p = (6.63 x 10^-34 J s)/(1.67 x 10^-24 kg m/s) = 3.96 x 10^-10 m.

The De Broglie Equation Predicts That the Wavelength (In M)