1) When accelerating an electron to 50 kV, calculate the energy, momentum, and wavelength of the electron, respectively. (The electron charge is 1.6x10-19C, the electron mass is 9.11x10-31kg, and the Planck constant is 6.63x10-34Js.)

2) When conducting a double-slit experiment as shown, calculate the distance between the bright bands.

11. a. 50kV , , , . ( 1.610-19, 9.1110-31kg, 6.6310-34 Js .) b. , . Electron diffraction fringes on the screen 50kV Two slits Filament Fluorescent Screen Electrons Vacuum