11. Momentum & Impulse
Intro to Conservation of Momentum
11. Momentum & Impulse Intro to Conservation of Momentum
1PRACTICE PROBLEM
An electron with a speed of 3.0 × 106 m/s collides with an atom which has the following energy levels: n1 = -24.6 eV, n2 = -5.4 eV, and n3 = -2.4 eV. The atom emits a 619.9 nm photon after the collision. Ignoring the atomic recoil, since the atom's mass is significantly larger than the electron's mass, determine what the electron's final speed will be. Note that the photon energy ≠ collision energy.
An electron with a speed of 3.0 × 106 m/s collides with an atom which has the following energy levels: n1 = -24.6 eV, n2 = -5.4 eV, and n3 = -2.4 eV. The atom emits a 619.9 nm photon after the collision. Ignoring the atomic recoil, since the atom's mass is significantly larger than the electron's mass, determine what the electron's final speed will be. Note that the photon energy ≠ collision energy.