Show that the water pressure at the bottom of the 50 -m-high water tower in the chapter-opening photo is $500,000 \mathrm{~N} / \mathrm{m}^2$, which is approximately $500 \mathrm{kPa}$

Suppose that you balance a 5-kg ball on the tip of your finger, which has an area of $1 \mathrm{~cm}^2$. Show that the pressure on your finger is $50 \mathrm{~N} / \mathrm{cm}^2$, which is $500 \mathrm{kPa}$.

Rank the following from greatest to least for the percentage of its volume above the water line: a. Basketball floating in fresh water b. Basketball floating in saltwater c. Basketball floating in mercury

What change in pressure occurs in a party balloon that is squeezed to one-third its volume with no change in temperature?

Rank the pressures from greatest to least for the following: a. Bottom of a 20 -cm-tall container of saltwater b. Bottom of a 20-cm-tall container of fresh water c. Bottom of a 5-cm-tall container of mercury

Distinguish between adhesive and cohesive forces.

How does pressure at the bottom of a body of water relate to the weight of water above each square meter of the bottom surface?

If a 1-L container is immersed halfway into water, what is the volume of the water displaced? What is the buoyant force on the container?

If a 1-L container is immersed halfway in water, what is the volume of the water displaced? What is the buoyant force on the container?

How does the water pressure 1 m below the surface of a small pond compare with the water pressure the same distance below the surface of a lake?

How does water pressure 1 m below the surface of a small pond compare to water pressure 1 m below the surface of a huge lake?

If you swim beneath the surface in saltwater, will the pressure be greater than in fresh water at the same depth?

Rank the numbers of shells in these noble-gas atoms from most to fewest: a. Argon b. Radon c. Helium d. Neon

What is a compound? Cite two examples.