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August 31, 2014

Posts by Velaria


Total # Posts: 3

Physics
Please help me with this problem. The standard source for radiation therapy was radioactive 60Co which decays with a halflife of 5.27y, into an excited nuclear state of 60Ni. That nickel isotope then immediately emits two gamma ray photos wach with energy of 1.2 MeV. How many ...
November 20, 2008

physics
Does work function=hc divided by initial wavelength. What would the initial wavelength be? 4x10E-7 nm?
November 14, 2008

physics
What is the minimum work function for a metal for visible light (wavelengths between 400 and 700 ) to eject photoelectrons?
November 14, 2008

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