An Alpha Particle (Mass = 4 Amu)is Moving Twice as Fast

Multiple Choice

An alpha particle (mass = 4 amu) is moving twice as fast as a proton (mass = 1 amu) .Calculate the de Broglie wavelength of the proton divided by the de Broglie wavelength of the alpha particle.

A) 1/4
B) 8
C) 1/8
D) 2
E) 1/2