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**Unformatted text preview: **of u ( , T ) as a function of . (cp. SSM, problem 5). 2. SMM Ch. 3: Problem #14 3. SMM Ch. 3: problem #20 4. SMM Ch. 3: Problem #24 5. SMM Ch. 3: Problem #47 (Head-on collision means the photon backscatters, i.e. = 180 in the Compton scattering formula.) 6. Carry out the sums involved in obtaining the average energy of a Planck oscillator in the derivation of Plancks law, i.e. show that E = X n =0 E n e-E n /kT X n =0 e-E n /kT 1 = X n =0 nhf e-nhf/kT X n =0 e-nhf/kT = hf e hf/kT-1 . Hint: Recall the geometrical series result X n =0 r n = 1 1-r , r < 1 . 2...

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