Compute the number of board feet of lumber with the following dimensions. 1. 2” x 6” x 12‟
2. 3” x 4” x 10‟
3. 2” x 2” x 16‟
4. 2” x 12” x 8”
5. 4” x 4” x 18”

Explain the difference laminar and turbulent flow. explain it with the shear stress and the velocity profiles.

Ariver flows from north to south at 8 km/h. a boat is to cross this river from west to east at a speed of 20 km/h (speed of the boat with respect to the earth/ground). at what angle (in degrees) must the boat be pointed upstream such that it will proceed directly across the river (hint: find the speed of the boat with respect to water/river)? a 288 b. 21.8 c. 326 d. 30.2

Determine whether or not it is possible to compress air adiabatically from k to 140 kpa and 400 k. what is the entropy change during this process?