Constants Periodic Table Part A In the Compton effect, a 0.149 nm photon strikes a free electron in a head-on collision and knocks it into the forward direction. The rebounding photon recoils directly backward. Use conservation of (relativistic) energy and momentum to determine the kinetic energy of the electron. Use the equation P= = hf h C IVO ? K = eV Submit Request Answer Part B Determine the wavelength of the recoiling photon. ? X'= nm Submit Request AnswerConstants | Periodic Table Part A Photons of energy 9.0 e V are incident on a metal. If the wavelength of the incident photons is doubled, what is the maximum kinetic energy of the ejected electrons? It is found that current flows from the metal until a stopping potential of 4.0 V is applied. O 18 eV O 10 eV O 4.5 e V O 1 eV O 0.5 e V O no current flows Submit Request Answer Part B What would be the maximum kinetic energy of the ejected electrons if the wavelength of the incident photons was tripled? O 27 eV O 15 e V O 4.5 e V O 1 eV O 0.5 eV O no current flows Submit Request