1. The Electric Field W1 D3 More on Chapter 14
11/28/2018 2:42 PM
The Electric Field
W1 D3
More on Chapter 14
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2. The Electric Field – W1D3 No QUIZ today. First quiz next Friday
CLICKERS: MONDAY START
Last Time
Coulombs' Law
Vector Notation: <a,b,c>
Superposition
Symmetry
Today – The concept of the Electric Field
Possibly some discussion about the electric dipole
Next Major Topic: Charge and Matter
Note: There is a NEW WebAssign that will appear sometime today. Topic: E-Field

3. Coulomb & vectors

4. In the figure, what are the horizontal and vertical components of the resultant electrostatic force on the charge in the lower left corner of the square if q = 1.5 x 10-7 C and a = 4.0 cm? (Assume the positive directions are upward and to the right.) y 2 3 r2 r3 1 x r1
Note that r goes from the origin to the point where we are computing
the force. For our example, r=0.

5. note for your edification
let’s do it!

6. `

8. discussion
A proton is placed a distance d above a table and is then released.
Describe its motion. The room is in a vacuum.  
“wt_?” d d
Observed

9. The Electric Field

10. DISCUSSION Is the field REAL??
the e field= F/Q 1 1
DISCUSSION
Is the field REAL??