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Homework 10 (Due 4/29/16)

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    What is the wavelength associated with a photon of a light with the energy is 3.6x10-19J?


    Calculate the energy of a photon of a light with the frequency is 6.5x10-14 s-1 ?


    Rigel is the brightest star in the constellation Orion and the seventh brightest star in the night sky. Rigel has an emission spectrum that peaks at ~145 nm. What is the surface temperature of Rigel? How does this temperatures compare with our sun (you have to look this up)?


    Find the longest-wavelength photon that can eject an electron from potassium, given that the work function is 2.24 eV. Is this visible electromagnetic radiation?


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