Review270

# Review270 - Summary of Electrostatics(Chapters 26-28 Matter...

This preview shows pages 1–5. Sign up to view the full content.

Summary of Electrostatics (Chapters 26-28) Matter has a property called charge charge has two signs ± ( - electrons, + protons) Charges exert forces on each other Opposite signs attract Like signs repel Force decreases with distance squared Mathematically expressed as Coulomb’s Law

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Coulomb’s Law #2 q 2 #1 q 1 r ˆ r The force due to charge #2 on charge #1 ! F 2 on 1 = Kq 1 q 2 r 2 ˆ r ˆ r is a unit vector pointing away from #2 (the charge making the force) along a line passing through #1 (the charge experiencing the force). When stated this way all signs and directions are taken care of!
#2 q 2 #1 q 1 r ˆ ! r The force due to charge #1 on charge #2 Newton’s third law: action-reaction ˆ r reverses sign ! F 1 on 2 = Kq 1 q 2 r 2 ˆ ! r = - ! F 2 on 1

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
#2 q 2 #1 q 1 Charges making force: q 1 , q 2 , q 3 , etc. #3 q 3 test charge q ! F on q = ! F
This is the end of the preview. Sign up to access the rest of the document.

## This note was uploaded on 12/28/2011 for the course PHYSICS 270 taught by Professor Drake during the Fall '08 term at Maryland.

### Page1 / 9

Review270 - Summary of Electrostatics(Chapters 26-28 Matter...

This preview shows document pages 1 - 5. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online