College Physics

Example 11.10 Calculating Density: Is the Coin Authentic? The mass of an ancient Greek coin is determined in air to be 8.630 g. ...

Figure 11.27The soap bubbles in this photograph are caused by cohesive forces among molecules in liquids. (credit: Steve Ford El ...

Surface tension is proportional to the strength of the cohesive force, which varies with the type of liquid. Surface tensionγis ...

Table 11.3Surface Tension of Some Liquids[1] Liquid Surface tension γ(N/m) Water at0ºC 0.0756 Water at20ºC 0.0728 Water at 100 º ...

Figure 11.31Bronchial tubes in the lungs branch into ever-smaller structures, finally ending in alveoli. The alveoli act like ti ...

Contact Angle The angleθbetween the tangent to the liquid surface and the surface is called the contact angle. Figure 11.33In th ...

Table 11.4Contact Angles of Some Substances Interface Contact angle Θ Mercury–glass 140º Water–glass 0º Water–paraffin 107 º Wat ...

This result is unreasonable. Sap in trees moves through thexylem, which forms tubes with radii as small as2.5×10−5m. This value ...

Table 11.5Typical Pressures in Humans Body system Gauge pressure in mm Hg Blood pressures in large arteries (resting) Maximum (s ...

Figure 11.37Schematic of the circulatory system showing typical pressures. The two pumps in the heart increase pressure and that ...

Figure 11.38The intraocular eye pressure can be read with a tonometer. (credit: DevelopAll at the Wikipedia Project.) Example 11 ...

Archimedes’ principle: absolute pressure: adhesive forces: buoyant force: capillary action: cohesive forces: contact angle: dens ...

diastolic pressure: diastolic pressure: fluids: gauge pressure: glaucoma: intraocular pressure: micturition reflex: Pascal’s Pri ...

Archimedes’ principle states that the buoyant force on an object equals the weight of the fluid it displaces. Specific gravity ...

18.What are two reasons why mercury rather than water is used in barometers? Figure 11.41shows how sandbags placed around a lea ...

Problems & Exercises 11.2 Density 1.Gold is sold by the troy ounce (31.103 g). What is the volume of 1 troy ounce of pure go ...

pounds the cork into place and the bottom of the jug (with a 14.0-cm diameter) breaks away. Calculate the extra force exerted ag ...

principle). You may assume that the buoyant force isF 2 −F 1 and that the ends of the cylinder have equal areasA. Note that the ...

78.When a person sits erect, increasing the vertical position of their brain by 36.0 cm, the heart must continue to pump blood t ...

398 CHAPTER 11 | FLUID STATICS This content is available for free at http://cnx.org/content/col11406/1.7 ...