Homework may be submitted by email (ronney@usc.edu), by fax (213-740-8071) or put in my mailbox (down the hall from my office in the OHE 430 suites, in the small room with the copy machine). DEN students should submit through the usual channels.

NOTE: You can use the Excel spreadsheets to check your answers, but you need to show your work using the relevant equations.

6.1 Answers: diffuse q₁ = ; specular q₁ = .

Note: to get these results you’ll need to use the fact that for D/L << 1,

6.6. Answers: diffuse q = , Q (per unit length) = ; specular q = , Q (per unit length) =.

6.7 Answers: q = = 1.47 x 10⁴ W/m², Q (per unit length) = 2Lq = 588 W/m, e_a = 0.519.

6.9 Answer: 180˚.

6.15

6.25. Answers: T₁ = T₂ = 343K, T₃ = 320K.