What Did We Learn in Physics?: 2011

MOODLE

Here is the link to moodle.

https://spselearning.sps.k12.mo.us

Password to "enrol" into Tompkins Physics is: CHSPhysics

Lesson 5: Friction

There are four videos here. I know it is close to 40 min of watching. I will let the last video be optional, but it will be helpful for your work. It is an example problem.

New videos

I will be getting some new videos on here tomorrow. Also, look out for a link to our new Moodle site. It will organize the vids and homework better than the blog.

Newton's Second Law Lesson

Have this watched by Monday 7 November 2011

Objective: Predict the direction and magnitude of the acceleration caused by a known net external force.

Your Responsibility:

Notes over the videos
Example problems from both videos

Newton's Second Law Explained.

Mass and Weight Clarification

Newton's First Law Lesson

Watch these 3 videos before class on Friday 4 November 2011.

Your Responsibility:

Notes over 1st video
Notes over 2nd video. i.e. the diagram of a block on an incline
Example problem of the ice block on the 3rd video.

This video does get into Newton's Second law around 9:00. Follow along and you will get additional practice on it.

Forces Video

Please watch and bring in your work on Wednesday. Be ready to work on the Free Body Diagram Activity.

Physics I Blog Ketchup

Yumm, This blog will make fries taste better.

Page 115 #41

For your view pleasure. Awe at my awesome math skills.

This Wednesday we did a lot of example problems in class. I understand that it was boring for most individuals, but I expect and require you to participate in class. I don't work problems for my benefit; I know how to solve them. The class period was for your benefit to help with the 4 new Kinematic equations that were given in class.

*Note: d should be Delta X

Homework: Pg. 53 #3,4
Pg. 55 #3
Pg. 58 #4,5

3 October 2011

This Monday we talked about acceleration. I introduced the equation for average acceleration as

We also talked about falling objects and the acceleration of gravity. We found the acceleration of gravity by completing a video analysis of two balls of different weights being dropped off a balcony.
g=9.81 m/s/s down

30 September 2011

On this day we covered H-Bar conversions. Conversion are a necessary part of life: from recipes, to car speed, to gasoline. Another easy way to convert is using google. Just type in your current quantity and what you want to convert to and it will give you the answer.

10 mph to m/s ----->10 mph = 4.4704 meters / second

Another thing you can try is a free app for your smart phone. The one I use on my iPhone is Convert Units for Free.

http://itunes.apple.com/us/app/convert-units-for-free-1-unit/id337224035?mt=8

PHET for great understanding

Use these website to help you understand 1 Dimensional Motion.

http://phet.colorado.edu/en/simulation/moving-man
http://phet.colorado.edu/en/simulation/lunar-lander
http://phet.colorado.edu/en/simulation/maze-game

There are a lot of other cool simulations on the PHET websites check them out and post your favorite for extra credit.

28 September 2011

Today we conducted another lab. The focus was to look at how velocity changes over a given period of time while a cart rolled down a track. You homework was to finish the lab worksheet

Monday 26 September 2011

Today we talked about Speed and Velocity. We also conducted a lab to strengthen the distance/displacement and velocity relationship.

Your homework was: Pg 44 #1-3, 6 and the Lab worksheets. These are both due on Wednesday.

21 September 2011

Today we discussed distance and displacement. We also conducted a Battery Car lab were we measured the position of the battery car and graphed it on a Position Vs. Time graph. We ended the class showing how the faster the object the steeper the slope of it Position Vs. Time graph.

The homework was to finish the lab worksheet and turn it in on Monday.

Notes:

Monday, 19 September 2011

There was a sub today. You did a team teaching task over pages 10-14, 20-23, and 40-47 in your physics textbook.

Your Homework:

Pg. 47 #1, 3
Pg. 69 #2, 4, 5ab

Vector Worksheet Answers

Here is the key to the Vector Homework. As I completed this I realized that some of it was going to be difficult for you. If you stick with the vector addition principal on most of them you willbe correct.

Extra Credit 1

Watch the Mythbuster video below and post your thoughts on this topic. I will give you until class on Wednesday, 21 September to post. We will be using vectors with relative motion to describe this phenomenon.

(You must include your name to get credit.)

Wednesday, 14 September 2011

Well this is the first blog entry for the year. Today we did a brief introduction to Vectors. 5th block went much smoother than 3rd. I owe 3rd a better explanation; I will complete that on Friday. I will also be posting our notes on this blog at a later time. I am glad to be back, and I appreciate your enthusiasm.

11 May

Test Today!!!

6 and 9 May

We worked on our study guides for the test on Wednesday. Here is the answer key.

2 May

Today we diagrammed lenses. I will post notes below.

The homework was Pg 588 #24-26

27 and 29 April

Today we conducted an index of refraction lab. Some of us pretended to be Darth Vader and destroyed Alderaan. Other decided to be good and kill cancer. The point of the lab was to measure a substances index of refraction, and then apply that to real life to make a laser bend to hit a target on the wall.

25 April

Today we talked about refraction of light through transparent objects.

Key things to note.

As light move from less dense materials to denser materials the speed of the photon actually slows down. As it moves back out into the less dense material it speeds up again.
When light is incident on a transparent object perpendicular to the surface of the object there is no refraction.
As light moves from less dense to more dense, the ray bends towards the normal. From more to less it will bend away from the normal.
Each color (wave length/ frequency) refracts differently. blue the most and red the least.
Snell's law:

n₁sinθ₁=n₂sinθ₂

n= index of refraction, the ratio between the speed of light in a vacuum and the speed of light in the transparent object.

Homework is Pg. 587 #10-14

22 April

I am sorry, I am absent again today. My back got pretty bad today. I think that I am comfortable letting a sub continue with what needs to be done now. In class I would like for you to draw the ray diagrams for Concave and Convex mirrors on pages 534 and 537 in the book. You will draw figure 14-13 (b & c) and figure 14-14.

Extra Credit 4

Each person who picks out one thing that changes as this wheel moves will get extra credit. You may only pick out one thing and it cannot be picked more than once. We will discuss this phenomenon later. It has to do with light.

I captured this video in Mizzou's physics building. I want to put one in our science display case.

20 April

Hey, we are finally able to use math to investigate mirrors. We still have not finished diagramming convex mirror due to the fact I could not comfortably raise my hand above my head to draw. You should be able to complete the homework now. You are not responsible for any of the diagramming parts of the lesson.

Your Home work: Pg 536 #2-4 & Pg 540 #4-6

Here are the notes so far. (Just click on the pages to zoom)

18 April

I was not at school today. I hurt my back over the weekend and could not make it out of the chair let alone the house. Instead of being stranded on the floor at school, I decided to relax on the couch at home. Sorry, I made you watch a video.

15 April

Today we continued to create Light diagrams. The main focus was on concave mirrors. Still no homework.

13 April

Today, we will start Light Diagramming. We will draw plane, concave, and convex mirror diagrams. You will also start doing calculations based on these diagrams. Such as the image height, image distance from the mirror and the magnification of the object. We did not finish Diagramming so I have postponed the homework.

~~The homework will be Pg. 536 #2-3 and Pg. 540 #4-6~~

11 April

Today we introduce the concept of Reflection. There was no homework, but we did complete an inclass lab that was due today. The point of the lab was to show that the Angle of Incidence always equals the angle of reflection. I will post notes to this blog at a later time.

8 April

Today we discussed the Bridge competition results. You worked on the laptops to complete your Summary Report.

You can check out the bridge results on this website: http://www.ozarkelectric.com/mspe/Bridge/2011rank.pdf

6 April

Today we took care of administrative duties for the bridge building competition. I want to say that the bridge products produced this year are the best I've seen so far. The competition went great. Pavel Antonyuk's bridge held 116.64 lbs. I do not know efficiencies yet but I will publish those when I get them (about 2 weeks).

4 April

Today we talked about the E-M Spectrum and how we see. We also showed how colors added and subtracted.

Homework: Pg 523 #1,2,4,5,6

30 March

We are having a Substitute today. Sorry for not being there; I have lost my voice and haven't been able to find it this morning. I have a great lesson planned for the next time that we meet.

28 March

Welcome back; I hope everyone has had a great break. Today we discussed basic wave priciples and related the Tsunami that hit Japan (2011) and Indonsia (2004) to the usual understanding of waves. I have included my hand written notes below.

The homework was Pg. 457 2-4.

18 March

Your designs and research worksheets are due today. You will get your building materials today whether I approve your design or not, but you will lose points if you do not get my approval.

16 March

Today is another day of designing and researching. If you get your bridge design approved early you may start construction/ cutting today.

14 March

Today we start our individual design portion of the Bridge Building competition. I passed out the template, and you are required to create a bridge design to scale. These designs are required to be approved by me before Friday so that you can build your bridge over spring break.

Extra Credit 3

What is one thing in physics you would like to learn more about? Who knows we might go to it next.

11 March

We will be finishing up our presentations. If you do not go on this day you will not go at all. Do not forget.

9 March

A lot is due today. You must have your presentation completed today. If you do not have them and you are called on to present you will be docked points. NO EXCEPTIONS. You must have all information needed to convey your results. Your lab reports, library research, and interview are also due. I am pushing the due date for the poster to next Monday, 14 March. I have attached the rubric that I will grade from below. Make sure you follow it.

7 March

We will be working on our bridge projects. I will be writing passes to the library to get your book sources. The main goal is getting the Prezis done for your presentations on Wednesday. I will be strict on not having these complete, and I will dock points. You do not know if your group is presenting first or last. BE PREPARED.

4 March

Today will be another computer day. You will want to get everything typed up and ready to turn in.

2 March

Today we are experimenting. Make sure you bring your test pieces into class. You may store them in my room for the day; just bring them by in the morning. After your experiment you will have one week to finish the lab report.

28 February

Today we had a computer day. The lab reports, up to a data table skeleton, were due today. You are now required to build your test pieces for Wednesday.

25 February

GREAT NEWS!!!! We received our bridge building supplies, so we are going to start our bridge building poject. I have included a link to the MSPE bridge building website on this blog. Go and research. I will post the official rules as well as the in-class requirements to this post at a later date. Be prepared to create an experiment over some aspect of a wooden bridge design.

Extra Credit 2

Today we did our egg drop competition. If the height that you dropped your egg was 15.7 m, how fast was the egg moving when it hit the floor? What was the momentum of just the egg? mass of an egg= 50.0 g. Post your answer by end of school on Thursday.

23 February

TEST!!!! Be there or be An equilateral parallelogram with 90 degree angles.

18 February

We will be grading the study guides today. Make sure you have at least attempted all problems. I will be checking and that can affect your study guide grade. Remember any blanks will result in a zero for the paper.

We will also update your foldables with the pertinent equations for the test.

Here is the key to the study guide. You now have all three days this weekend and Tuesday to study .

16 February

I will be answering questions on the numerous homeworks you should have completed. I will also be handing out study guides for you to complete before Friday, 18 Feb. This class will be mainly your work time and study time.

14 February

Happy Valentines Day. Today we held the Egg Drop Competition. I think it went well. I was hoping for a little more work from you all before class, but I think over all we had a good time. Remeber I will be docking points for a late entry. Get those to me before the end of this week.

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