Abeam of electrons is accelerated from rest through a potential difference of 0.200 kv and then passes through a thin slit. when viewed far from the slit, the diffracted beam shows its first diffraction minima at ± 12.1 ∘ from the original direction of the beam when viewed far from the slit. do we need to use relativity formulas? explain wide is the slit?

Which of the following best describes internal energy? a. the difference between the kinetic and potential energies of the particles in a system b. the sum of the kinetic and potential energies of the particles in a system c. the sum of the kinetic and thermal energies of the particles in a system d. the difference between the kinetic and thermal energies of the particles in a system