SP1

Final review solutions in two parts:

6/6/2011
If you want CPR credit for corrections to the Circuits Quiz, you must hand it in tomorrow. Below is a score breakdown for the classes.

5/31/2011
If you didn't get one, here is the Final Exam Review

5/29
Solutions to the circuits problems of PS9 and PS10 are split up into these google docs Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8 [|PS9 part 1 Solutions]

Q10, Q12, Q13, Q14, Q15, Q16, Q17 [|PS9 part 2 Solutions]

E9, E10, E11, E12, SP2, SP4 [|PS10 part 1 Solutions]

Q21, Q22, Q29, E13, E14, SP1, SP5 [|PS10 part 2 Solutions]

Handouts from this week on household power consumption:
(this is data from the source listed below on 5/19)

Next week we start review. You might want to bring your textbooks to school.

5/23
For this Friday, complete E9-14 and SP1,2,4,5 from the handout (the last two pages of the chapter linked below on 5/19) The ** final exam ** is scheduled for Friday 6/10 from 11:45-1:30 in Room 753 (5th period class) and Room 653 (6th period class). It will cover all topics through circuits (kinematics, forces, fluids, gravitation, electrostatics, circuits).

5/19/2011
Here is the circuit chapter from the old book. The SP problems at the end are good study problems.

Please read: What's the "best" way to boil water? http://www.treehugger.com/files/2009/11/electric-kettle-stove-or-microwave.php Standby power: http://standby.lbl.gov/standby.html (take a look especially at the [|data] )

5/18/2011
Start thinking about [|arduino projects] and/or using [|Google Sketchup] to design and then fabricate 3D things.

For tomorrow:
Simulate circuits here http://phet.colorado.edu/en/simulation/circuit-construction-kit-dc

a) Two resistors (one 10 Ohm and one 20 Ohm) in parallel with one 6V battery b) Two resistors (one 10 Ohm and one 20 Ohm) in series with one 6V battery c) Three resistors: one 10 Ohm and one 20 Ohm in parallel followed by one 5 Ohm in series with one 6V batter d) circuit of your choice

Find the potential drops **across** and the current **through** each resistor.

Test tomorrow: if you never looked at them, find solutions to PS5 and PS6 posted on 3/28 (see below)
We agreed there would be a problem on: Millikan Oil Drop, calculating g on other planets, boat floating, charges on a line, and at least one old problem.

For those of you working on the problem set, do read Chapter 22 in the textbook. That's why it's there.

5/5/2011
PS9, due, Thursday 5/12 will be composed of two parts: Part 1 is Q1-17 from here: Part 2 is Ms. Sharaf's problem set 9 from her course site http://www.phunsics.com/physics.html

4/28/2011
Final Buoyancy lab reports are due next week on lab day.

Homework for Monday: play with the following three simulations. For each one, write a response paragraph that you would be willing to share in class.

http://phet.colorado.edu/en/simulation/balloons http://phet.colorado.edu/en/simulation/travoltage http://phet.colorado.edu/en/simulation/electric-hockey

4/8/2011
Please read Ch. 20 in the new book (we'll call it PPP for Physics Principles and Problems) over the weekend. There will be a problem set PS8 on this material posted soon.

4/6/2011
Solutions to PS7 are here. Whoever wrote them did not do a good job of including units in all steps!

4/4/2011
Fluids quiz histogram: Textbook swap delayed until Wed/Thursday in class.

3/31/2011
DON'T FORGET! Bring your Griffith textbooks to class on Monday to trade for the new books. The last page of the packet is due on Tuesday (show work on separate sheet). We will work on the other parts Monday.

A first draft of the lab report for the buoyancy lab is due this Friday 4/1.
Also, this: remember how you posted to the discussion tab saying you read the syllabus. Well, you can also post to the discussion tab anytime you have questions about the material or the homework. One or more of your classmates may answer you! You heard that right, I'd like to see some discussion taking place on the board. Brownie points.

Solutions to PS5 and PS6 are in two parts: The Q and E problems and the SP problems

3/16/2011
Don't forget to look at the assignment schedule below. Before lab this week, I would like you a) to spend at least 10 minutes using this buoyancy simulation: http://phet.colorado.edu/sims/density-and-buoyancy/buoyancy_en.html (if that doesn't open, try to download the applet here: http://phet.colorado.edu/en/simulation/buoyancy) b) Think about how you could experimentally determine the density of a mystery fluid if all you have is one block of some material which doesn't float. (You also have a scale of course and are able to measure changes in volume for some fluids).

3/15/2011
Here's what's coming up


 * || **Homework** || **Due** ||  ||
 * || all assignments refer to Griffith text Ch. 9 ||  ||   ||
 * || **PS5** Read 9.1-9.3, Do: Q1,2,3,5,8,12,19; E2,3,5,7,12; SP1,2,3 || Mon 3/21 ||  ||
 * || **PS6** Read 9.4-9.5, Do: Q13,14,18,21,23,24,25,31; E10,11,14,15; SP4,SP5 || Mon 3/28 ||  ||
 * || Quiz on Fluids || Tue 3/29 ||  ||
 * || Quiz on Fluids || Tue 3/29 ||  ||

3/12/2011
I posted PS4 solutions below. If I gave you until Monday to show your work on PS4, I trust you not to change your answers after you look at the solutions. Please DO look at the solutions before the test though.

3/10/2011
Problem Set 4 solutions to Griffith problems:

Enter Buoyancy Lab data here: https://spreadsheets.google.com/ccc?key=0AmwWNu05jpTZdGR0Q1FSSFRFT2dyS19vanphUFhKY2c&hl=en&authkey=COSDj-UL Do Quiz corrections by Monday to deposit points in you Cumulative Points Reserve (CPR).


 * Keep in mind when studying for the test on Monday**:
 * every kinematics problem can and should be done principally through graphical analysis rather than by relying on equations. While both methods are equivalent, the equation method is more likely to get you into trouble for using it wrong and often requires more algebraic work. Save the trouble. Draw a v-t graph! Figure out what you need (time, displacement, acceleration, final velocity) from the graph.
 * Action/reaction pairs (aka Newton's 3rd law pairs aka force-tango-partners) never act on the same body and can never cancel, because...
 * Motto of the week (thanks to Ayisha): //An action/reaction pair is one force seen from two different perspectives//.

3/8/2011
Problem set 3 solutions
 * DO read through the solutions carefully. Compare your answers if different, make sure you understand the difference, and ask if you have any questions. Studying the solution is just as important as doing the problem in the first place. **

3/8/2011
Important: This definition of average velocity math v_{avg} = \frac{\Delta d}{\Delta t} math CANNOT be used to find displacement when velocity is changing! You must use the area under the v-t graph. (If v is constant, then both methods give the same answer).

Also, make sure to READ the question carefully and think about your word choice. For example, "increasing" is not the same thing as "positive", and "explain" means explain.

3/3/2011
Problem Set 2 solutions (most of):

3/1/2011
You have your work cut out for you: plan ahead!

Problem Set 3 is due this Friday 3/4.
Read: Supplement 4.1-4.2, Griffith 4.1-4.3 Do: Supplement: 1,2,8,11,12,17,20,24; Griffith Ch4. Q6,7,17; E1-11; SP1

Problem Set 4 will be due the following week on Friday 3/11
Reading: Supplement 4.3, Griffith 4.4 Problems: Supplement 31,32,38,75,76,79 Griffith Ch 4. Q20,23,25,30,32,33; E16,17,18,19; SP2,5,6

2/28/2011
PS2 extension until tomorrow. More resources for you: http://www.physicsclassroom.com/

2/27/2011
I hope you all enjoyed your break. I have added another link to the resources page. This might be of use to you, some physics lessons with worked out problems. Go ahead and learn yourself something! http://www.khanacademy.org/#Physics

**2/18/2011**
In addition to Problem Set 2, please read the NEW handout (Ch 4 on Force and Motion) over break. You should also read the OLD handout (Ch. 2 and 3 on motion at zero and constant acceleration). Basically you should catch up on all the reading.

Problem Set 2 will be a **redemptive opportunity for Quiz 1**. Every percentage point over 85% earned on PS2 will count as two percentage points back on the quiz. For example, if you scored 15/25 (60%) on the quiz, but got 95% on PS2, your Quiz 1 grade would go up to 80%. Such extraordinary opportunities don't come freely: I will capitalize on every opportunity to dock you for sloppiness on your problem set (units, labels, significant figures etc.) It's your move.

**2/14/2011**
Quiz 1 tomorrow! Problem Set 1 solutions: Problem Set 2:

**2/10/2011**

 * **Quiz 1** on kinematics and motion graphs (d-t, v-t, a-t) will happen in class **Tuesday 2/15**. Ask any questions you may have about the homework on Monday.
 * Solutions to PS1 will be given out on Monday after your problem sets are collected. (That's right, this means no late homework).
 * Everyone should at least take a look at the packet I handed out to you and consider using it as a study guide in addition to your notes. Next week we will start talking about free fall and objects thrown straight up, in case you want to look ahead.
 * Continue getting to know the moving man: http://phet.colorado.edu/en/simulation/moving-man

**2/7/2011**
Problem Set 1 is due Monday 2/14 in class, no exceptions. Get to know the moving man: http://phet.colorado.edu/en/simulation/moving-man Although I'm not assigning anything on him just yet, it's a good idea to explore and even use while doing PS1.

**2/1/2011**
Good Work! You've made it to the course website. Homework and notices will be posted here without fanfare, so check back often. For the first homework assignment, by Monday 2/7, please leave a comment in the discussion tab in which you state that you have found the website and have read and understood the syllabus.