# Conceptual Physics--Chapter 13: Liquids

## 10 terms · Conceptual Physics 10th e. by Paul G. Hewitt Summary of Terms, Summary of Formulas, and Terms Within the Textbook

### Pressure

The ratio of force to the area over which that force is distributed:
Pressure = force/area
Liquid pressure = weight density × depth

### Buoyant force

The net upward force that a fluid exerts on an immersed object.

### Archimedes' principle

An immersed body is buoyed up by a force equal to the weight of the fluid it displaces.

### Principle of flotation

A floating object displaces a weight of fluid equal to its own weight.

### Pascal's principle

The pressure applied to a motionless fluid confined in a container is transmitted undiminished throughout the fluid.

### Surface tension

The tendency of the surface of a liquid to contract in area and thus to behave like a stretched elastic membrane.

### Capillarity

The rise of a liquid in a fine, hollow tube or in a narrow space.

### Rule #1

#1. An object more dense than the fluid in which it is immersed will sink.

### Rule #2

#2. An object less dense than the fluid in which it is immersed will float.

### Rule #3

#3. An object having a density equal to the density of the fluid in which it is immersed will neither sink nor float.