Physics 8.10

Open Ended

A man pushes against two walls. Is work being done?

Multiple Choice

Which of the following statements best describes the difference between work done by a force and work done by pressure in fluids?

• Work by force involves displacement, while work by pressure involves change in volume.

• Work by force involves change in temperature, while work by pressure involves displacement.

• Work by force involves change in volume, while work by pressure involves displacement.

• Work by force and work by pressure are always the same.

Open Ended

Explain how the mathematical expression W = PΔV relates to the expansion of gases in closed systems.

Multiple Select

Which of the following are necessary conditions for the work done by a gas to be calculated as W = PΔV in a closed system?

• Constant pressure during expansion

• Freely moving piston

• Change in volume of gas

• Constant temperature

Multiple Choice

When air is pumped into a deflated tire, what happens to its volume and pressure initially?

• Volume increases, pressure remains nearly constant

• Volume decreases, pressure increases

• Volume and pressure both decrease

• Volume remains constant, pressure increases

Multiple Choice

Which of the following best explains what happens when more air is added to a tire that is already filled to a certain point?

• The tire walls expand easily and pressure remains constant.

• The tire walls resist further expansion and pressure increases.

• The tire bursts immediately.

• The pressure decreases as more air is added.

Open Ended

Describe how temperature affects the pressure in a fully inflated tire.

Multiple Choice

Which of the following thermodynamic processes is characterized by constant pressure?

• Isovolumetric process

• Isothermal process

• Adiabatic process

• Isobaric process

Open Ended

Reflecting on the scenario where a man pushes against two walls, how would you explain the relationship between force, displacement, and work in your own words?