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Physics – Wed, August 28

Physics – Wed, August 28. Find your assigned seat & begin quietly reading Syllabus & Introduction, Materials, Rules, etc Please tell your teacher if you have a nickname you prefer.

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Physics – Wed, August 28

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  1. Physics – Wed, August 28 • Find your assigned seat & begin quietly reading Syllabus & Introduction, Materials, Rules, etc • Please tell your teacher if you have a nickname you prefer. • Asst a: Multiplying with Significant Figures: columns C&E 1-15 (must show calc answer & then correct sig fig answer only) AND B 1-15 (must be stacked as example shown in class) – due tomorrow, and quiz Fri! • Asst b: Information Survey – instructions 1-5

  2. Physics – Thurs, August 29 • Organize Binders – copy today’s agenda!, dividers, handouts, materials (pencils, red pens, highlighters, calculator, protractor & ruler) • Introduction to Webpage • Answers to last night’s HW (quickly) - do tomorrow instead • Together do tonight's asst: #11, then #5a • Asst a: worksheet due tom. (there’s a quiz!) • FLM (top) = Bolded problems in 3,5,6,7,10; • Best-fitting bottom #11-14 (see examples posted on website) • Asst b: Information survey – instructions 6-10

  3. Physics – Fri, August 30 Don’t forget to copy today’s agenda! You may abbreviate slightly. • Go over both HWs (collect! make sure the title & date assigned is on both!) • Quiz: FLM & Best-fitting (always use sig figs!!) • Asst: Algebra & Trig Review • Algebra Review – circled problems on front, except 7,9,27,33,37; 40&45 we’ll do together Tues. • Trig Review – 5-23 (on back of Algebra; #15-20 use SOHCAHTOA; #21-23 use sin1, cos1, and tan1) • Information survey – instructions 11-16 (it is due, fully completed, Tuesday) • MUST have ruler & protractor Tuesday! • Get a graphing calculator too, if you don’t have one, or come talk to me!

  4. Tues, Sept 3 Don’t forget to copy today’s agenda! • Grade own quiz in red pen • Brief lecture notes on solving “system of equations” • Collect HW & Information Survey (titled & dated) • Asst: Start Vectors Packet • On your HOMEWORK paper (not in your binder!), take good notes on pages 1 and 2 • On that same paper, do example problem that is on page 3 • On the bottom of page 4, do addition problems P1-P3 and P5-P8 using the vectors (“set 1”) listed to the left. • Note answers are listed on the last page! You need a ruler & protractor for these!

  5. When graphing intersecting lines, solve both equations for y (use parentheses when dividing). Plug into y1 = & y2 = in graphing calculator. Then ... Systems of equations #40 & 45matrices & graphing intersecting lines Now do #45 both ways in your lecture notes!

  6. Wed, Sept 4 Don’t forget to copy today’s & every day's agenda! Sr’s copy tomorrow’s as well…. • Work on vectors (day 1 if you didn’t get them all; move on to day 2 if you did) • Both assts will be collected tomorrow, stapled together • Vectors Quiz – last 25 minutes of class • Asst: vector set 2 w/ graphical method P3-P5, P7-P9 (do NOT convert the angles to 0-360, do them in the NWES system!) Thursday, Sept 5th, 2013 (Sr Kick Off 2nd-5th) Do problems P1-P9, skip P6 using set 3 & the graphical method.

  7. Fri, Sept 6 (rally) • Correct quiz 2 (if time) • Turn in HW • Stapled together in this order: notes, example problem, set 1, set 2, set 3(Make sure there’s a line separating sets, if you did them on the same page) • Lecture notes: component method • Asst: Redo set 1 w/ component method (tonight you may skip #6, #8) #9 started together:

  8. Component Method (last school year’s notes)

  9. Component Method continued (last school year’s notes)

  10. start #9 together! (2011)

  11. Start HW #9 together:

  12. Mon Sept 9 • Do self-binder-check in 1st column • You can keep your binders in class if you like • 10-15 minutes for help on component method • Quiz: Component method • Asst: Vectors set 2 with components • Tonight you may skip #6 also, AND #7 • Donation Letter out (Thurs Back To School night)

  13. Tues Sept 10 • Turn in HW, stapled together: Sets 1 and 2 with components • Grade quiz in red pen (12+16 = 28 points total … / 10) • Vectors Minilab: READ TOP CAREFULLY & follow directions to collect data as precisely and accurately as possible • Work in groups of 3 or 4 • Change in directions: Only make ONE protractor (set of data) for your whole group to share • Put all names on that protractor, and turn in at end of period • See “Lecture Notes” on overhead/webpage about equilibriant • Asst A: Finish all Analysis questions on minilab (hints will be posted on webpage) • Asst B: Get donation letter signed by a parent/guardian; $0 is OK to fill in if times are tough… • Asst C 1st & 3rd period: Remind parents Mrs. Lewis will not be at Back To School Night & to email me if they have any questions or concerns

  14. Wed Sept 11 (collab) • Go over minilab • See next 2 slides • Lecture Notes – Speed and Velocity IMPORTANT!!!!! • Asst a: Speed/Velocity packet 1-18 (#1 only do to mi/hr, #7 only do Mercury & Earth; start 7 & 11 together) – hints on website! • DONATION letters? • No skirts/dresses tomorrow; wear good shoes! UNIT TEST Friday the 20th!!!!!

  15. Vectors Lab 3) so, according to above, your answer should be pretty close to the opposite of vector C (in other words -C) 5) the equilibriant (purple ray) is equal and opposite to the resultant (blue ray); so equil(A+B)=C If the equilibriant is asked for, find the resultant and flip the direction! 6) only use the MAGNITUDES to do the % error 8) equil (B + C) = A; 9) B + C = -A 11) C + A = -B; equil(C + A) = B

  16. Get a red pen, we’ll go over the quiz…. • After we correct it, how would you find the equilibriant of the problem? • Note: If you did not do well, you MUST come in for help! We are mostly done working on vectors in class, but they are 40% of the first unit test!

  17. Lecture notes:Distance, Displacement, Speed & Velocity • Copy the figure below • A = 3 km East, B = 4 km North • Elephant walked A+B in 2 hours • The distance is the total path walked (a scalar) • What is this? • The displacement (a vector) is the straight difference between the start point and the end point “as the crow flies” • What is this?

  18. Lecture notes:Distance, Displacement, Speed & Velocity • The elephant walked A+B in 2 hours • The speed is defined to be distance / time • What is this? • THIS IS A SCALAR • The velocity is defined to be the displacement / time • What is this? • THIS IS A VECTOR, so don't forget direction!!!! • These 4 questions about the elephant are question #2 on your first unit test, but with a more complicated vector problem than A+B in hor/vert directions!

  19. Lecture notes:Distance, Displacement, Speed & Velocity • If speed = distance / time, let’s review some simple algebra… • What is distance = ? • What is time = ? • BE CAREFUL! CROSS-MULTIPLY!

  20. Lecture notes:Distance, Displacement, Speed & Velocity • Question #1 on your first unit test asks for the definitions of distance vs displacement; and the formulas for speed & velocity • It also asks which are scalars & which are vectors • And is asks the following to make sure you get it … (see next slide)

  21. A bumblebee flew 56 meters along a long, twisting path only to land on a flower 1.0 meter due east of the point from which it started. If the entire trip took 30 minutes, what was its distance, displacement, average speed and average velocity?

  22. Let’s start #7 and #11 together • 7) Calculate the average speeds in km/yr of Mercury (and Earth, Saturn, and Pluto) in orbit around the sun. Use your astronomical data handout to obtain their "mean distance from the sun" (the radius of the assumed circular orbit) and their "period of revolution" (the time it takes them to go around once). • THINK CIRCUMFERENCE! • (a) At exactly 1:00PM a car traveling WEST at a constant speed of 24 km/hr is 11 km WEST of the school. Where will the car be at 3:30PM? (b) If instead the car was 11 km EAST of the school at 1:00PM, but still traveling WEST at a constant speed of 24 km/hr, where will the car be at 3:30PM? • DRAW A GOOD ANNOTATED PICTURE!

  23. Old lecture notes

  24. More old lecture notes

  25. Thurs September 12 (Back to School Night – I wont be here) • Questions on HW?? (2 from this set are on the test) • Talk about tonight's HW – “average speed” & “average velocity” • “Human locomotion” minilab • Asst: speed & velocity problems 19-34 hints on website! DONATION letters? Get ready for a Binder Check! (If you didn’t last week, do a binder self-check quickly in the first column of the rubric! Do you have the agenda copied for every day so far?) UNIT TEST Fridaythe 20th!!!!!

  26. Average speed & velocity

  27. Human Locomotion Minilab: Results & Conclusions:(has 4 parts: restate purpose, state results, error analysis, application of experiment) The purpose of this experiment was to prove that the fastest (non-mechanical) way to move a human body 10.0 meters is by crab-walking. The experiment proved that …. Possible sources of error were …. An application of this experiment is …

  28. Fri Sept 13 • Go over HW (3 from this set are on the test) • “The Optimal Average Speed of Collapse of a Domino Column” – get DATA • Asst: Speed/Velocity packet 35-52 skip 39 (continue to look on website and/or email me for help/hints) ** All will be collected tomorrow (Monday) DONATION letters - LAST DAY for HW credit (even if with a zero donation)! UNIT TEST Fridaythe 20th!!!!!

  29. The Optimal Average Speed of Collapse of a Domino Column Purpose: The purpose of this experiment is to determine the optimal (best) separation between dominoes lined up in a column, so that a specific column length of dominoes will collapse the most quickly.

  30. The Optimal … of a Domino … Day 2 Step 1) Do your graph of speed (list 2 on the y axis) vs separation (list 1 on the x axis). Sketch the graph on your lab paper. Use 2nd calc to find the maximum of the graph and write it on your paper too. Bring me your calculator with the max shown on the graph in the window. I will stamp it, and then you must erase your data & equation. Step 2) Write your R&C …. Results & Conclusions:(has 4 parts: restate purpose, state results, error analysis, application of experiment) The purpose of this experiment was to determine the optimal separation between dominoes lined up in a column, so that a specific column length of dominoes will collapse the most quickly.The experiment determined that the best domino separation would be ____ cm, which would fall with a speed of ____ m/s. Possible sources of error were …. An application of this experiment is …

  31. Mon Sept 16 • Go over HW (2 from this set are on the test); turn in • Finish & turn in Human Locomotion lab if didn’t • Finish & turn in “Optimal Average Speed ... Domino...” • Collect rest of data if needed • Do graph, best-fit quadratic, find max; get my signature/stamp on the sketch of graph on your paper • Do R&C • BOOKS OUT! • Put your name in your book & take it home! • Pass out HW – YOU MUST MEASURE IN BETWEEN THE DASHES on your ruler; ie to the hundredth of a cm (or the 10th of a mm)! • Start “Average Speed” experiment parts a-b (You MUST have data and a speed by tomorrow. Acceptable speeds are listed. Check yours, and email me if you don’t have that!) • On the BACK, part B #5 should say 35 mm measured = 6.912 x 108 meters actual UNIT TEST Friday the 20th!!!!!

  32. Tues Sept 17 Binder check ?? … Friday ?? You MUST have your own ruler & protractor! Do you have all the daily agendas? • Math Computer Lab: data & start first write-up together • Asst: • See ½-sheet Handout for book work plus re-do these … #31,35,48 in the speed packet (note that every question we assign the next few days IS ON THE TEST!) • Print off the Study Guide!! (it MUST be in your binder Wed!) • If you missed more than 5 on the last quiz, you must do this one on a separate sheet of paper: Vector packet using set 1, do 3B-C w/ both graphical & component methods; answers in both NWES and 0-360 UNIT TEST Friday the 20th!!!!!

  33. Wed Sept 18 • 6th: Math Computer Lab - Finish write-up (turn in paper data that was HW) • 1st & 3rd:Go over HW, book work, #23-29, & study guide - SEE NEXT 5 slides • Asst a) Vectors Set 3: #4 (pretend units = m) • Find total distance traveled • Find displacement w/ both graphical & component methods • Find speed & vel knowing time = 8.0 minutes • Find equilibriant in both 0-360 & NWES • Asst b) packet problems withOUT looking at notes, old HW, etc.... #7 (Saturn), 19, 20, 22b&c, 31, 34, 40, 42 Is the Study Guide in your binder???

  34. Thurs Sept 19 • 1st & 3rd: Math Computer Lab - Finish write-up (turn in paper data that was HW) • 6th:Go over HW, book work, #23-29, & study guide - SEE NEXT 5 slides • Asst a) Vectors Set 2: 4E – 2A • Find total distance traveled • Find displacement w/ both graphical & component methods • Find speed & vel if time = 10.0 hours • Find equilibriant in both 0-360 & NWES • Asst b) packet problems withOUT looking at notes, old HW, etc.... 7 (Pluto), 10, 21, 22a&d, 30, 35, 46, 48 STUDY!!!!! UNIT TEST TOMORROW! COME AS EARLY AS YOU CAN TO GET STARTED!!! Binder check: Do you have your own protractor & ruler? Do you have the study guide printed off? Do you have 17 schedules/agendas (and accompanying lecture notes when given)?

  35. NOTE: • Physics test policy: If you are absent for more than 1 unit test, you will be given a full essay test as a make-up. • If you are absent for only the test period, our “reasonable time period” is an hour for an hour, so the test will have to be taken within an hour of the period you missed. If you are absent for the whole day, you must take it the next day after school, since it’s a day for a day. (See above about being absent for more than 1 test!) • Any school field trips or sporting events: the policy clearly states that the test must be taken BEFORE the absence.

  36. IF WE DO NOT HAVE TIME TO GO OVER ALL OF THIS (Collaboration Day), IT IS YOUR RESPONSIBILTY TO LOOK IT OVER AT HOME, AND EMAIL US TONIGHT IF YOU HAVE QUESTIONS!!!!!

  37. Study Guide continued

  38. Fri Sept 20th This is the last agenda printed on your handout for you… • Turn in notebooks - CHANGED TO FRIDAY • Make sure you have everything in your reference section • Make sure all assts are in chronological order • Makes sure nothing is in your pockets • UNIT TEST! • You will need your ruler & protractor • I will provide you with a calculator; PUT IS IN DEGREES! • Cell phones in backpacks; both hands on desk at all times • Asst: Packet notes up to & including page 76 “Problem-solving strategy” (Write page numbers, as before!)

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