1. Chapter 5 Question 46: A 1-m-tall barrel is filled with water. It has a weight density of 9,800 N/m³. Show that the water pressure on the bottom of the barrel is also 9,800 N/m³. (0.5 pts)

2. Chapter 5 Question 64: Rank the following from most to least. (0.5 pts)

A) The pressure at the bottom of a 20-cm-tall container of salt water

B) The pressure at the bottom of a 20-cm-tall container of fresh water

C) The pressure at the bottom of a 5-cm-tall container of mercury

3. Chapter 5 Question 68: Rank from greatest to least the buoyant forces supplied by the atmosphere for (0.5 pts)

A) An elephant

B) A helium-filled party balloon

C) A skydiver in terminal velocity

4. Chapter 5 Question 108: A steel tank filled with helium gas does not rise in air, but a balloon containing the same gas will rise easily. Why is this? (0.5 pts)

5. Chapter 5 Question 120: Compared to an empty ship, would a ship loaded with a cargo of Styrofoam sink deeper or less deeply into water. Explain why this is. Hint: Think about this for a second before you answer (0.5 pts)

6. Chapter 6 Question: 52. Consider two glasses, one is filled with water and the other is half full, both are at the same temperature.

A) In which glass(es), if any, are the water molecules moving faster? (0.1 pts)

B) In which glass is there greater thermal energy? (0.2 pts)

C) In which glass will more heat be required to increase the temperature by 1 degree Celsius? (0.2 pts)

7. Chapter 6 Question: 45. Three blocks of metal at the same temperature are placed on a hot stove. Rank these blocks of metals, from greatest to least in terms of how quickly they warm up. (0.5 pts)

A) Steel - Specific heat capacity: 450