Part 2: The Stopping Potential and the Maximum Kinetic Energy of the Photoemitted electrons. This is the standard method for determining the kinetic energy of the electrons. Start with Cesium and a photon wavelength of 5?0 nm. Adjust the voltage until the electrons do not make it to the opposite end; you may need to enter the information manually by clicking on the "#\" symbol to the left of the Voltage button. Calculate the maximum KB of the electrons using the formula: qBV = RE Calculate the KB max using the formula KEmax= hf ~ 5' Compare the results on the chart below. Repeat for shorter wavelength. Repeat again for another metal and another two wavelengths (that are both emissive). Again, show your work below the chart for one of the calculations. Metal Photon Calculated KE from Calculated KE from wavelength Stopping Potential Photon Energy minus (nm) (31/, or J) work function ( 9V, or J) Cesium (Cs) ' 570 Cesium (Cs)