Water flows from one large tank to another at a rate of 050

Question

1. Natural gas ( ρ = 0.0044 slug/ft3 and v = 5.2 × 105 ft² /s) is pumped through a horizontal 6-in.-diameter cast-iron pipe at a rate of 800 lb/hr. If the pressure at section

(1) is 50 psi (abs), determine the pressure at section

(2) 8 mi downstream if the flow is assumed incompressible.

2. Water flows from one large tank to another at a rate of 0.50 ft³ /s through a horizontal 3-in.-diameter cast-iron pipe of length 200 ft. If minor losses are neglected, determine the difference in elevation of the free surfaces of the tanks.