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abstract representation of E field

Field line model

Superposition

E tangent to field line

E greater where lines closer together

Coulomb Force

lines point away from + /towards -

interaction is independent of other charges

lines originate on + and terminate on -

http://prezi.com/sk5d9ciakqze/coulomb-force/

more than 2 charges

lines representing total E don't cross

allows solution of multicharge problems

standard fields to know

These are vector problems!

further abstraction of the complex abstract idea of a field

Newton's Laws

qualitative behavior

test charge in pocket:)

Newtonian Mechanics

electrons are mobile

Electric Field

in solids:

nuclei are not

Forces

Newton's Laws

electrons are mobile

in liquids:

ions are mobile but slow (massive)

Work/Energy

philosophic problem

basic charge ideas

Circular Motion

http://prezi.com/2ppfda7yld_e/basic-charge-ideas/

action at a distance

opposites attract

3rd grade rule:

Freebody Diagrams

likes repel

Momentum

All the tools you develop to understand and describe the Newtonian universe are embedded. Electromagnetism just provide some additional forces that may be present in a particular setting.

energy needed to assemble

work/energy

downhill

Electric Potential

equipotential maps

points of equal electric potential

analogous to topographic maps of gravitational equipotentials

perpendicular to E field

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