6. a. What is the maximum kinetic energy of electrons in an x-ray tube with a tube voltage of 120 k Vp? Be sure to include the units along with your numerical answer. b. Approximately what fraction of the kinetic energy is converted to photons as these electrons come to rest in a thick tungsten target? c. Where does the remaining energy go? d. What is the maximum energy of the bremsstrahlung photons in keV? e. What is the minimum wavelength of the bremsstrahlung photons in nm? f. What is the approximate average energy of the photons