**AME 517, Fall 2009**

**Problem set #3**

**Assigned: 10/2/2009**

**Due: 10/13/2009, 4:30 pm**

** **

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 q_{1} = ; specular q_{1} = .

Note: to get these results youÕll 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 10^{4}
W/m^{2}, Q (per unit length) = 2Lq = 588 W/m, e_{a} = 0.519.

6.9 Answer: 180û.

6.15

6.25. Answers: T_{1} = T_{2} = 343K, T_{3} = 320K.