# Physics in Context - 1st Edition

## Chapter 1: The Prime Movers

Some links are repeated for use with more than one lesson.

### 1.1 Force in Mechanical Systems

Introduction to Vectors
http://www.physicsclassroom.com/Class/vectors/u3l1a.cfm
An introduction to vectors: a measure that has both magnitude and direction.

Vector Direction Practice
http://www.physicsclassroom.com/morehelp/vectdirn
Practice problems with vectors having direction and magnitude shown by arrows.

Several methods to add two or more vectors to obtain the resultant vector.

Practice problems for addition of vectors

Newton Biography
http://www.newton.cam.ac.uk/newtlife.html

Relative Velocity and Riverboat Problems
http://www.physicsclassroom.com/class/vectors/Lesson-1/Relative-Velocity-and-Riverboat-Problems
Application of vector addition to solve problems involving cross-winds and currents.

### 1.2 Pressure in Fluid Systems

Concrete Canoe Competition
This web site provides a wealth of information about the annual concrete canoe competition held annually in the U.S. Browse this site to learn about how concrete can float.

Submarines
http://science.howstuffworks.com/transport/engines-equipment/submarine.htm
Visit the series of pages at this site to learn how submarines are able to float, dive, navigate, and maintain control.

Archimedes of Syracuse
http://www-history.mcs.st-and.ac.uk/history/Mathematicians/Archimedes.html
This site provides a short biography of Archimedes as well as a summary of his achievments.

The Physics of Underwater Diving: Buoyancy Lesson
http://www.letstalkscience.ca/hands-on-activities/physics/how-do-scuba-divers-sink.html
This site includes a simple activity that demonstrates how neutral buoyancy is achieved by divers.

### 1.3 Voltage in Electrical Systems

Battery Basics
http://www.batterystuff.com/kb/articles/battery-articles/battery-basics.html

How Batteries Work
http://www.howstuffworks.com/battery.htm
This HowStuffWorks article is about batteries—from the basic concept at work to the actual chemistry going on inside a battery to what the future holds for batteries and possible power sources that could replace them.

How a Lithium Battery Works
http://www.cienciateca.com/stslibat.html
Check out the links on this page to find out all about lithium batteries, their construction, and uses. You can explore other parts of the site to see diagrams and specifications for batteries for specific uses such as implantable batteries for medical purposes.

Physics Tutorial: Static Charge
http://www.physicsclassroom.com/class/estatics/Lesson-2/Charging-by-Friction
The first of a series of web pages discussing static electricity: why it exists, how to produce it, and how it can be used, including some practice questions.

Static Electricity
http://schools.wikia.com/wiki/Static_Electricity
Static electricity lesson includes real-world applications and practice problems.