In a Young's double slit experiment the separation of the slits is 0.27 mm. The distance to the screen is 1.01 m. The third bright fringe is a distance of 5.8 mm from the central fringe. Determine the wavelengtht of the light. select unitsA sample of radioactive material contains 7.0E+10 unstable nuclei with a decay constant of 1 .10E06 Is. (3) Calculate how many nuclei remain after 1.5E+06 3. select units 3 (b) Determine the activity of the sample after 1 .5E+06 3. Give your answer as a positive value. A select units v The work function of a metal surface is 3.42 eV. Find the maximum wavelength of light that can eject photons from the surface. select units $ Tolerance = 5%, units mark = 15% Homework is 10 day(s) old, there is no score reduction. The work function of a metal surface is 3.10 eV. UV light of wavelength 207 nm is incident on the metal. (a) Calculate the maximum kinetic energy of the photoelectrons in SI umits. select units (b) Determine the maximum velocity of the photoelectrons. select units