HW-8 - section 4.4 2 R Ch 4#4.4 3 R Ch 4#4.6 4 R Ch 4#4.8...

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Physics 17 Due 11-30-09 Fall 2009 T. Tomboulis HOMEWORK # 8 Reading Assignment: Reif, Ch. 4. Problems: 1. β = 1 /kT expressed in energy units of eV at room temperature is about 40 (eV) - 1 . Consider then a macroscopic system at room temperature. Suppose the system absorbs a single photon of wavelength 5 × 10 - 7 m (visible light). By what factor does the number of states accessible to the system increase as a result? Hint: Use the formula for small heat transfer derived in class, also in Reif, Ch. 4,
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Unformatted text preview: section 4.4. 2. R Ch. 4: #4.4 3. R Ch. 4: #4.6 4. R Ch. 4: #4.8 Hint: At low temperatures the particles are more likely to be found in their low energy state ( ² 1 ), while at high temperatures both energy states ( ² 1 , ² 2 ) are almost equally likely. 5. R Ch. 4: #4.10 6. R Ch. 4: #4.18 7. R Ch. 4: #4.19 1...
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This note was uploaded on 01/21/2010 for the course PHYS 17 taught by Professor Staff during the Fall '08 term at UCLA.

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