Homemade Silly Putty

Several people have asked for it, so here's a link to a good recipe for homemade Silly Putty. A simple web search yields several recipes that suggest using liquid starch, but the resulting goo is pretty nasty stuff. This recipe uses Borax, which works considerably better. The recipe is from Steve Spangler Science, a site filled with some really cool, hands-on experiments.

Homework: 01/07/08 - 01/14/08

SC12: Physics
Day 1/2: Gravitional Potential Energy
HW: P. 174, 5C: 2, 4; P.180, 5D: 3
Day 3/4: Lab: Hooke's Law
HW: Begin lab report
Day 5/6: Elastic Potential Energy, Conservation of Energy
HW: P. 180, 5D: 1, 2; P. 185, 5E: 2, 3, 5

SC12P: AP Physics C (Mechanics)
Day 1: Work Done by a Constant Force
HW: P. 189: 1-4
Day 3: The Scalar Product of Two Vectors
HW: P. 189: 6, 7, 9a
Day 5: Work Done by a Varying Force
HW: Pp. 189 - 190: 12, 14, 21, 25

SC12APEM: Electricity & Magnetism Independent Study
Current, Resistance, Ohm's Law, Electrical Power

Homework: 12/14/07 - 01/04/08

SC12: Physics
Day 1/2: In-class exam corrections
HW: Read Ch. 5
Day 3/4: Work
HW: ---
(Holiday Break)
Day 5/6: Work and Kinetic Energy
HW: P. 170, 5A: 1, 3; P. 174, 5B: 1, 3, 5

SC12P: AP Physics C (Mechanics)
Day 1: Exam: Applications of Newton's Laws
HW: Finish reading Chapter 6
Day 3: In-class exam corrections, non-uniform circular motion
HW: ---
(Holiday Break)
Day 5: Motion through a resistive medium
HW: Pp. 156-157: 13, 14, 15, 27

SC12APEM: Electricity & Magnetism Independent Study
Work homework set from Chapter 27

Homework: 12/04/07 - 12/13/07

SC12: Physics
Day 1/2: Lab: Force and Acceleration
(Note: Section 1 is a day behind because of the Day 1 snow day)
HW: Begin lab report
Day 3/4: Exam Review
HW: Study
Day 5/6: Exam: Newton's Laws
HW: Read Chapter 5

SC12P: AP Physics C (Mechanics)
Day 1: NO SCHOOL - SNOW DAY
HW: ---
Day 3: Lab: Force and Acceleration
HW: Begin lab report
Day 5: Friction and Centripetal Acceleration
HW: Pp. 155-156: 1, 8, 9

SC12APEM: Electricity & Magnetism Independent Study
Work homework set from Chapter 27

Trebuchet Information

There are some interesting trebuchet videos available on YouTube:

• Profile of Hew Kennedy (you should recognize him from the Nova special)
• Japanese Human Trebuchet
• Volkswagon GTI Commercial

If you are interested in making your own, here are plans for a popsicle stick trebuchet.

Finally, here are a few trebuchet related links:

• The Grey Company Trebuchet Page
• Trebuchet.com

Enjoy!

Homework: 11/26/07 - 12/03/07

SC12: Physics
Day 1/2: Work & Kinetic Energy
HW: P. 170, 5A: 1, 3; P. 174, 5B: 1, 3, 5
Day 3/4: Class Trips
HW: ---
Day 5/6: Class Trips
HW: ---

SC12P: AP Physics C (Mechanics)
Day 1: Friction
HW: P. 131-132: 37, 39, 42, 44, 60
Day 3: Class Trips
HW: ---
Day 5: Class Trips
HW: ---

SC12APEM: Electricity & Magnetism Independent Study
Finish up Ch. 26 problems and start reading Ch. 27

Homework: 11/13/07 - 11/20/07

SC12: Physics
Day 1/2: Friction
HW: P. 145, 4C: 1 - 3
Day 3/4: Film: Medieval Siege Engines (Nova)
HW: Read over Chapter 5
Day 5/6: Trebuchet discussion, Clip: Punkin' Chunkin'
HW: None - Enjoy Thanksgiving!

SC12P: AP Physics C (Mechanics)
Day 1: More Applications of Newton's Laws
HW: P. 130-131 : 26, 28, 31, 32
Day 3: Film: Medieval Siege Engines (Nova)
HW: Complete the practice exam
Day 5: Trebuchet discussion, Friction
HW: None - Enjoy Thanksgiving!

SC12APEM: Electricity & Magnetism Independent Study
Work Ch. 26 problems