Problem 3.73 from Munson et al, 8th Edition [Statement: Carbon dioxide flows at a rate of 1.5 ft/s from a 3-in. pipe in which the pressure and temperature are 20 psi (gage)and 120 °F into a 1.5-in. pipe. If viscous effects are neglected and incompressible conditions are assumed, determine the pressure in the smaller pipe.]

Fig: 1