1. Mr. Gill shines a blue light (450 nm) on a piece of metal and detects electrons escaping with a low kinetic energy. What would you expect to happen to both the number of electrons and their velocity in each scenario. Please explain your reasoning in each case.
   1. The blue light is replaced with a yellow light (580nm) of equal intensity
   2. Two yellow lights are used instead of one
   3. A new metal with a much lower work function is used with yellow light.