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1. What is the average flow rate in cm³/s of gasoline to the engine of a car traveling at 100 km/h if it averages 10.0 km/L?

2-3. The Huka Falls on the Waikato River is one of New Zealand's most visited natural tourist attractions. On average the river has a flow rate of about 300,000

L/s. At the gorge, the river narrows to 20 m wide and averages 20 m deep. What is the average speed of the river in the gorge?What is the average speed of the water in the river downstream of the falls when it widens to 60 m and its depth increases to an average of 40 m?

4. Estimate the time it would take to fill a private swimming pool with a capacity of 20,000 gallons using a garden hose delivering 15 gpm.

5. Verify that pressure has units of energy per unit volume.

6-7. Hoover Dam on the Colorado River is the highest dam in the United States at 221 m, with an output of 1300 MW. The dam generates electricity with water taken from a depth of 150 m and an average flow rate of 650 m³/s . Calculate

the power in this flow. What is the ratio of this power to the facility's average of 680 MW?

8. What is a spring constant, and how can the constant for a given spring be determined?

9. What are the three common stresses that can be placed on a material?

10. What is the density of a material?

11. When a solid is heated, what happens to molecules? What happens to magnetized materials?

12. When a liquid is heated, what happens to the molecules?

13. When a gas is heated, what happens to the molecules?

14. What happens to the temperature of a substance when it starts to change states? (Solid to liquid)

15. What happens to the molecules of a substance when it changes from solid to liquid?