PhysicsLAB AP Free Response Question
2010 B7

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Light of wavelength 400 nm is incident on a metal surface, as shown above. Electrons are ejected from the metal surface with a maximum kinetic energy of 1.1 x 10-19 J.
 (a) Calculate the frequency of the incoming light.

 (b) Calculate the work function of the metal surface.

 (c) Calculate the stopping potential for the emitted electrons.

 (d) Calculate the momentum of an electron with the maximum kinetic energy.

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