An Electron and an Alpha Particle (A Helium-4 Nucleus)each Have

Multiple Choice

An electron and an alpha particle (a helium-4 nucleus) each have the same non-relativistic speed.Which has the greatest kinetic energy,and which has the shortest de Broglie wavelength?

A) the alpha particle,the alpha particle
B) the alpha particle,the electron
C) the electron,the alpha particle
D) the electron,the electron