A loaded semi-truck consumes about 10 US gallons of diesel per hour (assuming an average speed of 60 mph) and is driven about 16 hours per day, every day of the year. The density of diesel is 0.85 kg/liter. If 1 barrel of crude oil produces 10 US gallons of diesel fuel. How many semi-trucks could run on the crude oil produced in the US in one year (1.8x10^9 barrels)?

Flow A B C A liquid flows through a pipe with 3 sections, each having a different inside diameter as shown above. Given: • The density of water is 62.4 lbm/ft3 • The specific gravity of the fluid is 0.9 ⚫ The flowrate of the liquid is 55 gpm • The section inside diameters are: A=1.25 in; B-2.75 in; C=3.5 in What is the volumetric flow, ft3/s, through the pipe? What is the elocity, ft/s, in section A? What is the velocity, ft/s, in section B? What is the velocity, ft/s, in section C? What is the mass flowrate, lbm/hr, through the pipe?

I need help with question c. Not sure what to do. Thanks

P1 E B P2 A A liquid flows through a piping system from P1 to the top of a structure at P2 The entire piping system is 4 sch 40 pipe The piping system is intended to provide liquid at a rate of 80 gpm while maintaining a P2 pressure of 32 psig. The flowrate at P1 and P2 are the same. (ie.. there is no splitting or branching of the flow) The friction factor, f (fanning), can be assumed to be 0.005

2. A natural gas is flowing through a 1 m diameter and 6.5 km long pipeline (friction factor= 0.0024) at a constant temperature of 15 °C. The pressure at the inlet of the pipe is 5.7 MPa. What is the maximum mass flow rate of the gas that can be achieved and the corresponding downstream pressure? [Ans. Gmax = 1012.3 kg s-¹, Pw = 498.6 kPa]