​This is the plan for E&M Charges. Plans sometimes change.
Videos & Study Resources:

Monday, 1-11-10:
  • In Class:
    • Rvw sticky tape home lab
    • Slides on charge
  • Homework:
    • Ch 15 sections 1-2, 4: Read & take notes
    • Knight Packet 25- Electric Charges & Forces: #

Tuesday, 1-12-10:
  • In Class / Homework:
    • Read & Notes 15.1 - 15.4
    • Knight 25 Packet: 1-3, 4d-4f, 5-11, 22-28

Wednesday, 1-13-10:
  • In Class:
    • Check students going tubing
    • Rvw Knight
    • Begin Electric Field Hockey (PHET)
  • Homework:
    • PS 15.1: prob#1, 3, 7, 17.
    • Use your knowledge of VECTORS to do vector addition and vector resolution for # 22-28
    • Read & Rvw U of M lab problems 1 & 2 for their e&m lab. UM Electric Fields & Forces pdf.

Tuesday, 1-19-10
  • In Class:
    • Reviewed a few problems from Knight's Packet
  • Homework:
    • Read 15.5 & take notes
    • Finish unfinished Homework
      • PS 5.1
      • Knight's Packet
    • Read Problem #2 The Electric Field from a Dipole from Lab IV Electrc Fields and Forces

Wednesday, 1-20-10:
  • In Class:
    • Review g fields & gravitational equipotentials
    • Compare g fields & equipotentials to E fields and Electrical Equipotentials
    • Begin U M Electric Fields & Forces lab Part 2.
  • Homework:

Thursday, 1-21-10:
  • In Class:
    • Finish data collection for U's EM Lab Problem #2
  • Homework:
    • Finish Lab Problem #2
    • Read & Prep for Lab Problem #3 (available from earlier handout, an additional handout today, or by the link in Wednesday above).
Monday, 1-25-10:
  • In Class:
    • Rvw Airplane Problem
    • Discuss possiblity of a once a month saturday study group
  • Homework:
    • Knight 26: The Electric Field: #2-9
    • Prepare for Lab Problem 3: That means you should have all of the front page done & ready. You should be ready to start with the warm up part of the back page.

Tuesday, 1-26-10:
  • In Class
    • Finish data collection for UM lab problem #3.
    • Possible location for Saturday study group: Silver Lake Park?
  • Homework:
    • Finish Lab Problem #2 & 3 analysis & conclusion
    • Do Knight 26: The Electric Field #10, 13, 16 - 20

Wednesday, 1-27-10:
  • In Class:
    • Finish Lab
    • Finish Homework
  • Homework:
    • Stay on top of assignments
    • PS 15.1 & 15.2 & Knight 25 should be turned in.

Thursday, 1-28-10:

Friday, 1-29-10:
  • In Class:
  • Homework:
    • READ 16.1. Read it slowly. It can make sense.
      • Take Notes on 16.1 Figures & Captions
    • PS 16.1: Prob#1,3,5,7

Monday, 2-01-10:
  • In Class:
    • AP Physics Tests:
      • We are preparing for the AP Physics B (APPB) exam. A course that is algebra based and covers a full year of freshman physics. In many places it is worth 8 college credits.
      • There is also the AP Physics C (calculus based) Mechanics (APPC-Mech) exam and the AP Physics C Electricity & Magnetism (APPC-E&M) exam.
      • If you are in calculus and are interested in the additional exam, you can register for the AP Physics B exam and the AP Physics C Mechanics Exams. The test dates & times are identical. If you want to take both, we notify the College Board that you have a test conflict. They will let you take the Calc based exam on the late test date. Then we can use the roughly 10 days between the exams to prep for the calc based test.
      • If you want to also take the E&M exam, that is your choice. However, I think it would be best to limit yourself to the APPB & APPC Mech exams.
    • Rvw shielding.
    • Rvw problem #3
    • Problem 5 asks for magnitude so that is absolute value. No + or - signs
  • Homework:

Tuesday, 2-02-10:

Wednesday, 2-03-10:
  • In Class:
    • Work on simulations
  • Homework:
    • PS 16.2:
      • C.Q.'s # 1,4,5,7,11
      • prob's # 11, 13, 15, 17

Test: Monday

But to lighten that load, here is a wonderfully physics-y story for you guys:(author unknown - Creative for sure, not sure about how appropriate it is.).

It all started when our predictably heroic hero, Mr. Lulai, woke up in a imaginery desert. It was the third time it had happened. Feeling scarcely worried, Mr. Lulai backhanded a dangerous oil-soaked rag, thinking it would make him feel better (but as usual, it did not). Heartily laughing like a very impressive and amazing manly man, he realized that his beloved Van De Graaff generator was missing! Immediately he called his redheaded stepchild of a 'friend', Neutrino. Mr. Lulai had known Neutrino for (plus or minus) 153 years, the majority of which were electric ones. Neutrino was unique. He was congenial though sometimes a little... annoying. Mr. Lulai called him anyway, for the situation was urgent.

Neutrino picked up to a very glad Mr. Lulai. Neutrino calmly assured him that most albino cats yawn before mating, yet long-haired sea monkeys usually charismatically yawn *after* mating. He had no idea what that meant; he was only concerned with distracting Mr. Lulai. Why was Neutrino trying to distract Mr. Lulai? Because he had snuck out from Mr. Lulai's with the Van De Graaff generator only two days prior. It was a saucy little Van De Graaff generator... how could he resist?

It didn't take long before Mr. Lulai got back to the subject at hand: his Van De Graaff generator. Neutrino turned red. Relunctantly, Neutrino invited him over, assuring him they'd find the Van De Graaff generator. Mr. Lulai grabbed his elephant and disembarked immediately. After hanging up the phone, Neutrino realized that he was in trouble. He had to find a place to hide the Van De Graaff generator and he had to do it aimlessly. He figured that if Mr. Lulai took the pimp fresh, candy-painted 'Lac, he had take at least ten minutes before Mr. Lulai would get there. But if he took the hovercraft? Then Neutrino would be exceedingly screwed.

Before he could come up with any reasonable ideas, Neutrino was interrupted by seven abrasive zebras that were lured by his Van De Graaff generator from the box of chalk in which they lived. Neutrino belched; 'Not again', he thought. Feeling puzzled, he thoughtfully reached for his banana and skillfully punched every last one of them. Apparently this was an adequate deterrent--the discouraged critters began to scurry back toward the swamp, squealing with discontent. He exhaled with relief. That's when he heard the hovercraft rolling up. It was Mr. Lulai

As he pulled up, he felt a sense of urgency. He had had to make an unscheduled stop at Sears to pick up a 12-pack of humanely killed frogs, so he knew he was running late. With a quick leap, Mr. Lulai was out of the hovercraft and went surreptitiously jaunting toward Neutrino's front door. Meanwhile inside, Neutrino was panicking. Not thinking, he tossed the Van De Graaff generator into a box of potatos and then slid the box behind his hammock. Neutrino was concerned but at least the Van De Graaff generator was concealed. The doorbell rang.

'Come in,' Neutrino earnestly purred. With a careful push, Mr. Lulai opened the door. 'Sorry for being late, but I was being chased by some oafish zealous...zealot in a time machine,' he lied. 'Schmeh,' Neutrino assured him. Mr. Lulai took a seat just under where Neutrino had hidden the Van De Graaff generator. Neutrino panicked trying unsuccessfully to hide his nervousness. 'Uhh, can I get you anything?' he blurted. But Mr. Lulai was distracted. Giggling like schoolgirl, Neutrino noticed an annoying look on Mr. Lulai's face. Mr. Lulai slowly opened his mouth to speak.

'...What's that frickety-frackin smell?'

Neutrino felt a stabbing pain in his armpit when Mr. Lulai asked this. In a moment of disbelief, he realized that he had hidden the Van De Graaff generator right by his oscillating fan. 'Wh-what? I don't smell anything..!' A lie. A annoying look started to form on Mr. Lulai's face. He turned to notice a box that seemed clearly out of place. 'Th-th-those are just my grandma's live hand grenades from when she used to have pet legless puppies. She, uh...dropped 'em by here earlier'. Mr. Lulai nodded with fake acknowledgement...then, before Neutrino could react, Mr. Lulai randomly lunged toward the box and opened it. The Van De Graaff generator was plainly in view.

Mr. Lulai stared at Neutrino for what what must've been ten nanoseconds. Absolutely thrilled, Neutrino groped explosively in Mr. Lulai's direction, clearly desperate. Mr. Lulai grabbed the Van De Graaff generator and bolted for the door. It was locked. Neutrino let out a sassy chuckle. 'If only you hadn't been so protective of that thing, none of this would have happened, Mr. Lulai,' he rebuked. Neutrino always had been a little pestering, so Mr. Lulai knew that reconciliation was not an option; he needed to escape before Neutrino did something crazy, like... start chucking bananas at him or something. Suddenly cheered up by Haugen’s pagan music, he gripped his Van De Graaff generator tightly and made a dash toward the window, diving headlong through the glass panels.

Neutrino looked on, blankly. 'What the stink? That seemed excessive. The other door was open, you know.' Silence from Mr. Lulai. 'And to think, I varnished that window frame three days ago...it never ends!' Suddenly he felt a tinge of concern for Mr. Lulai. 'Oh. You ..okay?' Still silence. Neutrino walked over to the window and looked down. Mr. Lulai was gone.

Just yonder, Mr. Lulai was struggling to make his way through the bush behind Neutrino's place. Mr. Lulai had severely hurt his armpit during the window incident, and was starting to lose strength. Another pack of feral zebra s suddenly appeared, having caught wind of the Van De Graaff generator. One by one they latched on to Mr. Lulai. Already weakened from his injury, Mr. Lulai yielded to the furry onslaught and collapsed. The last thing he saw before losing consciousness was a buzzing horde of zebra s running off with his Van De Graaff generator.

But then God came down with His congenial smile and restored Mr. Lulai's Van De Graaff generator. Feeling exasperated, God smote the zebra s for their injustice. Then He got in His curb-jumping ghetto sled (Impala) and jetted away with the fortitude of one million venomous koalas running from a oversized pack of Indonesian devil cats. Mr. Lulai stumbled with joy when he saw this. His Van De Graaff generator was safe. It was a good thing, too, because in four minutes his favorite TV show, the Packers game, was going to come on (followed immediately by 'When long-haired sea monkeys meet gun'). Mr. Lulai was jubilant. And so, everyone except Neutrino and a few rusty razor blade-toting venomous koalas lived blissfully happy, forever after.

Friday, 2-05-10:

Monday, 2-08-10:
  • In Class:
    • Rvw problem #1 from review packet. Notes pasted below.
    • Test will be Wednesday. Some m.c. and some f.r.
    • Remember there are no calculators and no equation sheet for the mc section.
  • Homework:
    • Rvw problem 1 and finish #2 & 3 from packet.
  • Notes:

Tuesday, 2-09-10:
  • In Class:
    • Rvw packet.
  • Homework:
    • Study for test tomorrow

Wednesday, 2-10-10: (edited by kristina)
  • In Class:
    • took the test. schmeh................
  • Homework:
    • take-home test. schmeh!
----- ---- ---- ----- ---- ---- --- ----
This is not related to E&M Charges, but it's still a cool physics video explaining some of the dynamics of an Olympic snowboarder's trick.

Or look at this Link on the Physics of Ski Jumps

Thursday, 2-11-10:
  • In Class:
    • Review Test (both mc & fr)
  • Homework:
    • Read Ch 16 section 6 & 7.
    • Do PS 16.3: Ch 16 #22-24

Friday, 2-12-10:

  • In Class:
    • discuss capacitors
    • rvw hw #24
    • read 16.8 (we kinda discussed 16.9) 16.8 is new
  • Homework:
    • PS 16.4: #29, 30, 31
    • get a disposable camera and take physics pictures.
  • Notes:

Go To the Section On Circuits.

Mondy, 12-01-08:
  • In Class:
    • Review Energy Test.
    • Start Sticky Tape Lab - Didn't get there. We will start this lab on Tuesday.
  • Homework:

Tuesday, 12-02-08:
  • In Class:
    • Finish Sticky Tape Lab
  • Homework:
    • Do worksheet. (try to finish it for Wednesday)
      • Think about how protons & electrons can move in insulators & conductors.
      • Note that the particles that can flow will flow if they have some place to go (for instance, if the ground is available)
      • For pages 497- 500
        • First: Read Section Titles
        • Second: look at pictures & figures; Read their captions
        • Predict Content of 15.1 & 15.2
        • Take Notes
        • State 2 things you knew & 3 things that are new to you.

Wednesday, 12-03-08:
  • In Class:
    • Discuss Charge model.
    • Rvw 15.1 & 15.2
    • Do electroscope exploration lab: charge the leaves each of the three ways the book discussed in sections 1&2 of ch 15. Draw a sketch of what the charges are doing in each case.
  • Homework:

Thursday, 12-04-08:

  • Homework:
    • PS 15.1: Ch 15 Probs 1, 3, 10

Friday, 12-05-08:
  • In Class:
  • Homework:
    • Knight 25: Read the directions!!!
      • 22, 24, 25, 26, 29, 31
    • Read 15.3, 15.4, 15.5
    • Take Notes on Figures & Quick Quizzes.
  • NOTE:
    • There are 2 very similar, yet very different conceptual tools.
      • Field Lines: Lines that show which way a tiny, imaginary test charge would be pushed. These lines:
        • Must Start & End on either a charge or infinity
        • The number of these lines indicate the strength of the E Field The lines Must Not Intersect.
      • Electric Field Vector Arrows: These are similar to the field lines mentioned above. A bit different though:
        • LENGTH of ARROW indicates strength of Field.
        • Arrow show strength of Field at The Origin of The Arrow
        • The Electric Field Vector Arrow (EFVA) does NOT have to start or end on a charge (nor infinity).

Monday, 12-08-08:
  • In Class:
  • Homework:
    • Problem Set 15.2: #17, 19-21, 23
    • Knight 26:
      • pg 26-1: #1-3a (uses. EFVA)
      • pg 26-2: #5, 6
      • pg 26-3: #7a, c, f, 8b, d, 9a
      • pg 26-4: #10
  • NOTE:
    • Sledding might be possible Thursday or Friday. Looks like snow then & slightly warmer Thurs/Fri than on Tuesday. No sledding Tuesday, maybe Thurs / Fri. I will put up a link to the sledding questions.
    • The Show WIRED SCIENCE on PBS had a couple of relevant & good segments on Neutrinos & Theoretical Physics. Try going here: http://www.pbs.org/kcet/wiredscience/video check the segments on Underground Cave, & James Gates. The others are pretty good too.

Tuesday, 12.09-08:
  • In Class:
  • Homework:
    • Finish h.w. packets & ps 15.2 If you have time, get a headstart by reviewing sections 15.6 -- 15.8

Wednesday, 12-10-08:
  • In Class:
    • Review E=F/q Notes below.
    • Van DeGraff for field lines. Mylar balloon follows (kinda) field lines btn person & balloon.
    • Shielding.
    • Corona dishcarge.
  • Homework:
    • Read 15.6 -- 15.7
    • P.S. 15.3: # 25, 32a, 36, 37
  • Note: We will have a test the THURSDAY before break.

Thursday, 12-11-08:
  • In Class:
    • Review Fields
    • Discuss Electrostatics, charges and
      • work
      • potential energy
      • potential (voltage)
      • equipotential
  • Homework:
    • Finish up problem sets.
    • Pre-Reading: Read captions to figures in sections 16.1-16.2. State key point for each figure
    • Read. Take 1 sentence of notes for each paragraph of text.
  • Note:
    • Sledding Friday. Check the sledding link to the left
    • Test in Thursday on Fields, Forces, Potential Energy, Potential (voltage)

Friday, 12-12-08:
  • In Class:
  • Sledding.

Monday, 12-15-08:

Tuesday, 12-16-08:
  • In Class:
    • Conduct Lab. Be ready to go right away.
  • Homework:
    • AP question on charges, fields, and potential energies.
    • ch.16 PS 16.1:
      • C.Q.'s # 1,4,5,7,11
      • prob's # 13
    • should have read by now: 15.1-15.8 &16.1-16.3
  • Note:
    • Test Thursday.
Wednesday, 12-17-08:
  • In Class:
    • Finish E Field Lab
    • Work on ps 16.1.
  • Homework:
    • Finish PS 16.1
    • Review Unit 10 & 11 from handout
Thursday, 12-18-08:
  • In Class:
    • Whiteboard problems.
  • Homework:
    • MC & FR Packet. Treat these like a take home test. Do solid work. Use your classmates.
      • On FR, show your work. More help below.
      • On MC, think about general approaches, can some things cancel, is it best to use Kinematics, Forces, Energies (this is sometimes MISLEADING);
      • Generally (both FR & MC):
        • am I looking at a DURING Interaction deal (then probably forces) or am I looking at instances before & after an interaction (then probably momentum or energies).
        • Use energy or momentum bar charts for before & after (be sure to identify the system),
        • use free body diagrams for forces (START with a sketch; then A SEPARATE FBD that includes contact forces, then long range forces like gravity or electrostatic forces; THEN a statement of N2L)
    • The packet is here in case you misplaced it etc.
    • Review Content:
    • Question Packets (Make Sure These Are Done):

Monday & Tuesday, 1-05-09 --> 1-06-09:
  • In Class:
    • Review packet from break.
    • Begin next unit on charges in motion.
  • Homework:
    • Check next website page: AP E&M Circuits.