Figure 1 shows air inside a cylinder with a movable piston.
Figure 1
The piston is pulled a little way in the direction of the arrow, but stays inside the cylinder.
Which of these increases?
☐ | A | The mass of the air inside the cylinder. | ||||
☐ | B | The rate at which air particles collide with the walls of the cylinder. | ||||
☐ | C | The volume of the air inside the cylinder. | ||||
☐ | D | The pressure of the air inside the cylinder. |
The tube is inflated with a bicycle pump.
State the angle that this outward force makes with the wall of the tube.
[1]
Atmospheric pressure is 100 000 Pa.
Calculate the volume of air inside the tube.
Assume the temperature of the air inside the tube is the same as the temperature of the air outside the tube.
Use an equation selected from the list of equations at the end of this paper.
[3]
volume = ............................................... litres
You should ignore any effects of friction in the pump.
Explain why the air in the bicycle pump gets warm.
Did this page help you?