1. Wed. Apr. 27 – Physics Lecture #5 Pressure Fluids and Gases 0. Announcements, Guests, Innovators Presentations 1.Check-ins about Check-ins 2.Life of a Leaf discussion 3.Density 4.Mass, Weight, Force 5.Pressure 6.Gauge Pressure 7.Fluid Pressure 8.Surface Tension 9.Capillary Action Uncredited images from OpenStax College Physics

2. 0. Announcements, Guests, Innovators Presentations

3. 1.Check-ins about Check-ins

4. 2. Life of a Leaf discussion

5. 3.Density

6. Which of the following do you know from the problem statement? Hold up as many cards as necessary. 1.Mass 2.Volume 3.Density 4.Height 5.Radius 0. None of these

7. 4. Mass, Weight, and Force

8. 5. Pressure

12. 6. Gauge Pressure

14. 7. Fluid Pressure

15. What’s the density of mercury?

16. Imagine that you had a 100 m long straw. If Supergirl used her super- lungs, how high up the straw could she suck water?

17. In the figure, m has radius r and M has radius R. The density of the liquid is . Find h. m M

18. 8. Surface Tension

20. 9. Capillary Action

21. Example 11.2 Can capillary action be solely responsible for sap rising in trees?