Introduction to modern physics - FSU Physics Department
Introduction to modern physics - FSU Physics Department
Introduction to modern physics - FSU Physics Department
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Problems<br />
estimate Sun’s surface temperature assuming:<br />
• Earth and Sun are black bodies<br />
• Stefan-Boltzmann law<br />
• Earth in energetic equilibrium<br />
(i.e. rad. power absorbed b = rad. power<br />
emitted) , mean temperature T = 290K<br />
• Sun’s angular size Sun = 32’<br />
show that for small frequencies, Planck’s average<br />
oscilla<strong>to</strong>r energy yields classical equipartition result<br />
= kT<br />
show that for standing waves on a string, number of<br />
waves in band between and + is n = (2L/ 2 ) <br />
35
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