Part E
The maximum photoelectron ejection speed in meters per second for an electron ejected from potassium if the light has a wavelength of 210 nm . Express your answer in meters per second.
Part F
The maximum photoelectron ejection speed in meters per second for an electron ejected from gold if the light has a wavelength of 210 nm . Express your answer in meters per second.
Part G
The stopping potential in volts for potassium if the wavelength is 210 nm . Express your answer in volts.
Part H
The stopping potential in volts for gold if the wavelength is 210 nm . Express your answer in volts.
