(4) One key feature of photoemission that supports Max Planck's idea that light comes in discrete packets involves an important observation with regards to the frequency of light that causes photoemission. The next investigation will look at the influence of changing the wavelength of light shining on the metal. The observation was crucial to Einstein's mathematical explanation of photoemission. Complete the table below by changing the necessary parameters. Check the box entitled "Show only highest energy electrons" and set the intensity to 100%. The wavelength and stopping voltage can be changed to specific values by clicking on the boxes near the slider. Be careful to determine the stopping voltage to the nearest 0.01 V. Adjust the voltage such that the ejected electrons stop just short of the negative plate. If the electrons hit the negative plate, the stopping voltage must be increased - try 0.01 increments when getting close. Metal Wavelengthm Calculate the frequency Stopping Calculate the maximum C / HZ Voltage/ V kinetic energy (EK(max)/ J) using f = Sodium 125 x 1015 Sodium 300 x 1015 Sodium 450 x 1015 Sodium 538 x 1015 Sodium 540 x 1015