1. An electron is accelerated from rest through a potential difference of 100 V. What is the associated de Broglie wavelength of the electron? (1.23 x 10-10 m) 2. In a Young's double-sit experiment performed with electrons, the two slits are separated by a distance of 2.0 x 106 m. The first-order bright fringes are located on the observation screen at an angle of 3.52 x 10 degrees. Find the wavelength and momentum of the electrons. (1.23 x 10-10 m, 5.40 x 1024 kg-m/s)