Fluid Mechanics Concepts and Principles

This AP Physics 2 tutorial reviews key concepts in fluid mechanics, including density, pressure, and Pascal's Principle. The lesson provides an overview of these topics, followed by guided practice questions to reinforce understanding. The video concludes with a debrief and summary of the main points covered.

What is the relationship between mass, volume, and density?

• Density is mass times volume.

• Density is volume divided by mass.

• Density is volume minus mass.

• Density is mass divided by volume.

Which of the following best describes specific gravity?

• The mass of a substance compared to water.

• The ratio of the density of a substance to the density of water.

• The weight of a substance compared to water.

• The volume of a substance compared to water.

How is pressure defined in terms of force and area?

• Pressure is force times area.

• Pressure is force divided by area.

• Pressure is area divided by force.

• Pressure is force plus area.

What is gauge pressure?

• The pressure exerted by a fluid at rest.

• The pressure at the surface of a fluid.

• The pressure due to the weight of the fluid above a point.

• The total pressure at a point in a fluid.

According to Pascal's Principle, how is pressure transmitted in a fluid?

• Pressure is transmitted undiminished to every part of the fluid.

• Pressure is diminished as it moves through a fluid.

• Pressure is only transmitted to the surface of the fluid.

• Pressure is increased as it moves through a fluid.

In a hydraulic system, what happens when a small force is applied over a large distance?

• A small force is exerted over a small distance.

• A large force is exerted over a small distance.

• A large force is exerted over a large distance.

• No force is exerted.

What is the effect of temperature on the density of a fluid?

• Density decreases with temperature.

• Density increases with temperature.

• Density fluctuates randomly with temperature.

• Density remains constant with temperature.

How can you determine the density of a liquid using a double pan balance?

• By observing the color of the liquid.

• By measuring the temperature of the liquid.

• By comparing the mass of the liquid to a known mass.

• By measuring the volume of the liquid.

What is the relationship between depth and pressure in a fluid?

• Pressure increases with depth.

• Pressure remains constant with depth.

• Pressure decreases with depth.

• Pressure fluctuates with depth.

Which of the following is true about absolute pressure?

• It is the pressure exerted by a fluid at rest.

• It is the pressure due to the weight of the fluid only.

• It is the sum of gauge pressure and atmospheric pressure.

• It is the pressure at the surface of a fluid.