If you understand and can do these problems you should do well on the quiz.

1. List the appropriate formulas and units in the boxes below.

## Formulas |
## Units (SI / English) |

2. Water flows through a 10 foot pipe at a flow rate of 0.75 m^{3}/sec.
It undergoes a pressure drop of 150 N/m^{2}. Find the resistance
of the pipe.

3. The resistance in a fuel-transfer pipeline is 3 (lb/in^{2})
/ (gal/min). The line is 6.75 inches in diameter. Fuel moves through the
line at a volume flow rate of 650 gal/min. Find the pressure difference
along the length of the pipeline.

4. A fluid flows through a certain length of pipe at 0.075 m^{3}/sec
and undergoes a pressure drop of 2000 N/m^{2}. Calculate the fluid
resistance of the pipe.

5. In order to run water to all the trees in an orchard, would it be better to run just one pipe with a sprinkler at each tree, or hook the rows all up in a parallel system? WHY?

6. A hose has a resistance R_{f} equal to 0.5 (lb/in^{2})
/ (gal/min). What pressure drop across the hose is needed to produce a flow
rate of 20 gal/min?

7. An air hose is 30 feet long, and has a flow rate of 5 gal/min. There's
a pressure drop of 12 lb/in^{2}.

7a. What is the flow rate of this hose?

7b. What will be the flow rate if an identical hose is connected, in series, to the first?

8. Water flowing through a pipe at 18 ft^{3}/min has a pressure
difference of 200 lb/in^{2} over a distance of 2.2 miles. Find the
resistance (R_{f}) that causes the pressure difference.

9. An air compressor delivers air to a receiver tank at 135 lbs/in^{2}.
A 120 foot air hose with a pressure drop of 2.3 lbs/in^{2} for each
15 foot of length is connected to the tank. The hose operates an air tool.

9a. Find the pressure at the air tool in lbs/in

^{2}and lbs/ft^{2}.

9b. Find the resistance in the air hose if the tool requires 20 ft

^{3}/min of air to operate.