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Physical Chemistry 2 - Work function - HELP NEEDED

  1. Jan 29, 2007 #1
    I really need help with the following question,

    If the work function of Rb is 2.09 eV, what is the number of electrons ejected, their energy in eV, and their velocity, from a microjoule pulse of 500nm laser light?
     
  2. jcsd
  3. Jan 29, 2007 #2

    t!m

    User Avatar

    This is a standard application of the photoelectric effect - what have you tried so far? What equations do you have that may be useful?
     
  4. Jan 29, 2007 #3
    I have K.E = hv-(work function)
    and v=speed of light/wavelength
    E = nhv
     
  5. Jan 29, 2007 #4
    I have K.E = hv-(work function)
    and v=speed of light/wavelength
    E = nhv
     
  6. Jan 29, 2007 #5

    t!m

    User Avatar

    You have pretty much everything you need then, just plug away. If you get stuck, show us where.
     
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