what is the wavelength of the matter wave associated with a proton moving at 373 m/s? wavelength of proton matter wave: m what is the wavelength of the matter wave associated with a 183 kg astronaut (including her spacesuit) moving at the same speed? wavelength of astronaut matter wave: m what is the wavelength of the matter wave associated with earth moving along its orbit around the sun? wavelength of earth matter wave: