Carbon dioxide flows at a rate of \(1.5 \mathrm{ft}^{3} / \mathrm{s}\) from a 3-in. pipe in which the pressure and temperature are \(20 \mathrm{psi}\) (gage) and \(120^{\circ} \mathrm{F}\) into a 1.5-in. pipe. If viscous effects are neglected and incompressible conditions are assumed, determine the pressure in the smaller pipe.