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Chapter 29: Introduction to Quantum Physics

Expert-verified
College Physics (Urone)
Pages: 1033 - 1066
College Physics (Urone)

College Physics (Urone)

Book edition 1st Edition
Author(s) Paul Peter Urone
Pages 1272 pages
ISBN 9781938168000

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94 Questions for Chapter 29: Introduction to Quantum Physics

  1. Violet light of wavelength \({\rm{400 nm}}\) ejects electrons with a maximum kinetic energy of \({\rm{0}}{\rm{.860 eV}}\) from sodium metal. What is the binding energy of electrons to sodium metal?

    Found on Page 1063

  2. Question: Violet light of wavelength \[{\rm{400 nm}}\] ejects electrons with a maximum kinetic energy of \[{\rm{0}}{\rm{.860 eV}}\] from sodium metal. What is the binding energy of electrons to sodium metal?

    Found on Page 1063

  3. UV radiation having a \(300\,{\rm{-nm}}\) wavelength falls on uranium metal, ejecting \(0.500\,{\rm{eV}}\) electrons. What is the binding energy of electrons to uranium metal?

    Found on Page 1063

  4. Question: UV radiation having a 300nmwavelength falls on uranium metal, ejecting 0.500eVelectrons. What is the binding energy of electrons to uranium metal?

    Found on Page 1063

  5. How can treating food with ionizing radiation help keep it from spoiling? UV is not very penetrating. What else could be used?

    Found on Page 1061

  6. What is the wavelength of EM radiation that ejects \(2.00\,{\rm{eV}}\) electrons from calcium metal, given that the binding energy is \(2.71\,{\rm{eV}}\)? What type of EM radiation is this?

    Found on Page 1063

  7. Question: What is the wavelength of EM radiation that ejects \(2.00\,{\rm{eV}}\) electrons from calcium metal, given that the binding energy is \(2.71\,{\rm{eV}}\)? What type of EM radiation is this?

    Found on Page 1063

  8. Find the wavelength of photons that eject \(0.100\,{\rm{eV}}\) electrons from potassium, given that the binding energy is \(2.24\,{\rm{eV}}\). Are these photons visible?

    Found on Page 1063

  9. Tanning salons use “safe” UV with a longer wavelength than some of the UV in sunlight. This “safe” UV has enough photon energy to trigger the tanning mechanism. Is it likely to be able to cause cell damage and induce cancer with prolonged exposure?

    Found on Page 1061

  10. What is the maximum velocity of electrons ejected from a material by \(80\,{\rm{nm}}\) photons, if they are bound to the material by \(4.73\,{\rm{eV}}\)?

    Found on Page 1063

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