Modern Physics

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Unformatted text preview: PHY251 Homework Set 3 Reading: Chapter 4 Homework: Chapter 4, Questions 3,5,7 Problems 2,8,13,16,32 Hints and Solutions Note: SHOW ALL WORK! Question IV.3 How would you estimate the temperature of a red-hot piece of steel, given that the wavelength of red light is in the neighborhood of 700 nm? What assumption would you have to make for your estimate? Hints: How do you know that the red wavelength is a maximum, and not a tail of the distribution in the visible part of the spectrum? Solution: No Solution yet Question IV.5 Suppose you have a source that emits a beam of light at some frequency f that impinges on a metal plate. What happens to the energy of the photoelectrons that are emitted when you are moving the source closer to the plate? Hints: What happens to the frequency when the source approaches the observer (electron)? Solution: No Solution yet Question IV.7 Without working out the algebra in detail, why is the process γ + e → e forbidden by the energy-momentum conservation laws, while the process...
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This homework help was uploaded on 02/05/2008 for the course PHY 251 taught by Professor Rijssenbeek during the Spring '01 term at SUNY Stony Brook.

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Homework 03 - PHY251 Homework Set 3 Reading Chapter 4 Homework Chapter 4 Questions 3,5,7 Problems 2,8,13,16,32 Hints and Solutions Note SHOW ALL

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