Appendix H: Selected Answers to Homework Problems

This appendix contains a sampling of answers to selected homework problems at the back of each chapter. The solutions are provided as a study aide so that the reader can try additional problems that might not have been assigned for homework.

Chapter 1

1. Specific Gravity = 1.17

2. Spillover = 4.47 m³

6. Specific Gravity = 3.75

10. 38220 N/m²

12. 11,637 N

15. 5285 Pa

18. 3206 m

22. V = 0.015 m³

26. 0.017 m/s

29. a_x = 0.5 g

Chapter 2

9. $D_{a b} = - \frac{1 - x_{a}}{c_{t} \frac{d x_{a}}{d y}} = \frac{1 - x_{a}}{\frac{c_{t} a_{o}^{3}}{3 x_{a}^{2}}}$

15. $q^{″} (0) = - 59, 683.5 \frac{W}{m^{2}} q^{″} (0.2) = - 93.255.5 \frac{W}{m^{2}}$

18. ${\frac{\partial T}{\partial y} |}_{2} = 22.5 K / m$

28. y = 2000 x_a = 0.724

Chapter 3

7. $\bar{v} = 464 \frac{m}{s}$

15. $\begin{array}{l} q^{″} = \frac{k Δ T}{L} & = & 7.56 W / m^{2} & Kinetic Theory \\ = & 26 .46 W / m^{2} & C h a p m a n - E n s k o g \end{array}$

17. $k = 14.6 \frac{W}{m K}$

30. $σ = 8.60 \times 10^{- 7} \frac{C o u l}{m}$

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Transport Phenomena Fundamentals, 4th Edition by Joel L. Plawsky

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