Physics Notes: Pressure

1. A mountain climber brings a barometer up a mountain with him. What does he observe about the mercury level?

2. As a bubble rises from the bottom of the sea to the top, what happens to the air inside it?

3. A mercury barometer has its radius multiplied by 4. What happens to the height of the mercury column?

4. The pressure of a volume of air held in a syringe is X Pa. If the piston is pushed such that the volume of air is halved, what happens to the pressure?

5. The pressure of a gas in a sealed container at a temperature of 30°C is measured as Y Pa. The container is cooled/heated such that the pressure of the gas is now 3Y. What is the final temperature of the gas?

6. When a volume of gas is compressed, why does the pressure increase?

7. A lady wearing stilettos walks into a clump of mud. Her heels sink into the mud. Why?

8. There is trapped air in a capillary tube held by a 10 cm long column of mercury. Atmospheric pressure is 76 cm Hg. What is the pressure of the trapped air when the tube is held parallel to the ground?

9. A narrow capillary tube with one side open is held inverted with the closed side on the top. There is a column of trapped air held by a mercury plug of length 7cm. What is the pressure of the trapped air?

10. The pressure of a volume of air held in a syringe is X Pa. If the piston is pushed such that the volume of air is reduced by 30%, what happens to the pressure?

1. A mountain climber brings a barometer up a mountain with him. What does he observe about the mercury level?

2. As a bubble rises from the bottom of the sea to the top, what happens to the air inside it?

3. A mercury barometer has its radius multiplied by 4. What happens to the height of the mercury column?

4. The pressure of a volume of air held in a syringe is X Pa. If the piston is pushed such that the volume of air is halved, what happens to the pressure?

5. The pressure of a gas in a sealed container at a temperature of 30°C is measured as Y Pa. The container is cooled/heated such that the pressure of the gas is now 3Y. What is the final temperature of the gas?

6. When a volume of gas is compressed, why does the pressure increase?

7. A lady wearing stilettos walks into a clump of mud. Her heels sink into the mud. Why?

8. There is trapped air in a capillary tube held by a 10 cm long column of mercury. Atmospheric pressure is 76 cm Hg. What is the pressure of the trapped air when the tube is held parallel to the ground?

9. A narrow capillary tube with one side open is held inverted with the closed side on the top. There is a column of trapped air held by a mercury plug of length 7cm. What is the pressure of the trapped air?

10. The pressure of a volume of air held in a syringe is X Pa. If the piston is pushed such that the volume of air is reduced by 30%, what happens to the pressure?