600-nm light strikes a photoelectric surface and electrons with a maximum kinetic energy of 0.17 eV are emitted. (1 eV=1.601x10-19 J) a) (4 points) What is the frequency of light?

b) (6 points) What is the work function of the surface? c) (10 points) What electric potential would the electrons have to travel through so that they are stopped?