Ultraviolet light is incident normally on the surface of a certain substance. The work function of the electrons in this substance is 3.44 eV. The incident light has an intensity of 0.055 W/m2. The electrons are photoelectrically emitted with a maximum speed of 4.2 x 105 m/s. What is the maximum number of electrons emitted from a square centimeter of the surface per second? Pretend that none of the photons are reflected or heat the surface.