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Category: Physics 12

Wednesday!

Wednesday!

Tuesday: Worksheet 2: do numbers 1-4, 6
Wednesday: also do numbers 8, 10, 11

Watch the videos again! That’s your assigned viewing for tonight. (You can skip the one on electric fields and focus on electric potential.


A video on electric fields, what we covered in class today:

An energy problem involving electrical potential energy:

Electric Potential: this is a very dense complex video.… read more

Electrostatics: Electric Charge + Electrostatic Force

Electrostatics: Electric Charge + Electrostatic Force

This video is only 10 minutes but EXTREMELY dense. Consider playing it at 0.75X speed and pausing frequently to take notes. That’s right – you are taking notes on these videos, right?

And a demonstration of a single force calculation using Coulomb’s law, with some explanation of the equation.… read more

Practice Test Answers

Practice Test Answers

Written response:
Circular Motion:
1. 1600 N
2. 7.7 rpm
3. coefficient when “just about to slip” = 0.61, so mu = 0.82 is fine
4. 11 N
Gravitation:
5. 9.2 hours
6. 3.3E8 m/s (note this is faster than the speed of light – no escape!)
7.… read more