Problem 4.12

(a) 1.732 cm

(b) 33.7 m/s

Problem 4.32

-2.48 °F

Problem 4.33

-10.9 Btu/lb

Problem 4.51

4.59 lb/s

Problem 4.59

-15.72 kW

Problem 4.73

(a) 33.2 gal/min

(b) 3.304 x 10⁵ Btu/hr