PHYSICS+LINKS

This page will allow all of you to find something interesting, fun, exciting that you would like to share with the rest of the class. Post it on this site and tell the rest of the class why you find it interesting and how it relates to what is being done in this course.

1. Choose a week for which you will be responsible for adding interesting Physics stuff to this page.

2. Add a minimum of 3 interesting Physics links, animations, etc. to this page. The links must: - be related to topics discussed in class - be annotated (explain why you find the link interesting and how it is related to a class topic)

1..FEBRUARY 15 - 19 Name: **//David Nissim //** a) A review of each unit from Gr.11 physics. See if you can remember any of this stuff. In the links I found, they seemed to have combined the first two units. I find these links especially interesting because I think my physics teacher used some of the questions on our tests. lol i//. Unit 1&2:// __**Motion and Forces**__ [|http://www.classconnect.ca/Documents/SPH3U0/Extra%20Review%20(Forces%20and%20Motion).pdf] //ii. Unit 3:// __**Energy and Efficiency**__ [] //iii. Unit 4:// __**Electricity and Magnetism**__ [] //iv. Unit 5:// **__Waves, Sound, and Light__** [] v. Formula Sheet if you need it. []

b) We talked about significant digits and converting units, so if you forget how either thing works, check out the links below. //i. Rules for significant digits.// [] //ii. How to convert to different units.// [] []

2..FEBRUARY 22 - 28 Name: Jeremy Dabor

An additional resource you can use to ask questions: HwPal - [|http://www.hwpal.com/]~ check out the about page!

A visual representation of a kinematics impact problem: []

Really good representation of position, velocity, and acceleration: [|http://jersey.uoregon.edu/vlab/block/Block.html]

Additional Practice:

A. Graphing motion //i. Questions [|http://mrohrling.yolasite.com/resources/4U_physics/graph_review.pdf] // ii. Solutions [|http://mrohrling.yolasite.com/resources/4U_physics/graph_review_ans.pdf]

B. 1-D Uniform motion //i. Questions// [] //ii. Solutions// [|http://mrohrling.yolasite.com/resources/4U_physics/Uniform_mot_rev_ans.pdf]

3..MARCH 1 - 5 Name: //Manuel Arab

A visual explanation to using Vectors on Youtube which shows a different method of how to do vectors (parallelogram method) []A general overview of things you need to know to do vectors properly [] A SparkNotes look through using Vectors which also involves a list of key formulas near the end as well as a simple vector quiz to test your knowledge.//[|//http://www.sparknotes.com/testprep/books/sat2/physics/chapter4section1.rhtml//] //A Visual Flash Version of Dot-Product Rule. Very useful for those that learn best visually. Little lever can be moved up and down to change angle.// [|//http://faraday.physics.utoronto.ca/PVB/Harrison/Flash/Vectors/DotProduct/DotProduct.html//]

//General Link to Flash Based Online Examples of different physical phenomena/problems. Divided into sections and covers everything from Mechanics to Waves.// [|//http://www.upscale.utoronto.ca/GeneralInterest/Harrison/Flash///]

//Vector/Displacement Problems:// [|//http://www.physics247.com/physics-homework-help/vector-addition.php//]

//The best resource for Physics help, provides animations, mini quizzes and in depth explanations with relevant analogies:// [|//http://www.physicsclassroom.com/Class/vectors///]

4..MARCH 8 - 12 Name: Deanna Reilly

5..MARCH 22 - 26 Name: //** Nan Huang. **//

I've noticed that most of the links that are being posted are resources that offer extra explanations and practice. Instead of posting more review and resources, I'm going to do something different and post science articles that are related to the topic we covered this week, ** __projectile motion__ **// (and a bit of vectors). If anyone is specifically looking for extra explanations and practice: In your physics textbook, refer to pages 78-84 for a review of projectile motion and pages 117, 118 for extra questions.//

[] This article explains how outfielders seem to be able to predict exactly where a fly ball will land. The researchers who tackled this question used Brown University's virtual reality lab, VENLab, to simulate catches and then threw virtual balls at real catchers. They had 3 theories to test: "trajectory prediction", "optical acceleration cancellation (OAC)", and "linear optical trajectory (LOT). Their results showed that the catchers didn't predict the trajectory, but they might track the motion of the ball letting it lead them to the right place at the right time. " The subjects tended to adjust their forward-backward movements depending on the perceived elevation angle of the incoming ball, and separately move from side to side to keep the ball at a constant bearing, consistent with the theory of OAC".  T he researchers used VENLab to simulate many throws of a ball while changing different aspects of the simulation to alter the ball's trajectory; this is a real life example that is similar to what we had to do for the assignment where we determined how a change in mass, velocity and etc of a projectile would affect it's motion.
 * How Does an Outfielder Know Where to Run for a Fly Ball?**

[] On May 14th 2009, 2 satellites, Herschel and Planck, were sent into space. Questions such as "Where are the two spacecraft? In which direction are they heading? How fast are they going? How does their actual speed compare to that required to get into their proper orbits?" are not unlike the ones that the engineers, mathematicians, computer scientists and astrophysicists on ESA's Flight Dynamics had to figure out as quickly as possible after the satellites were launched. Flight dynamics specialists are also responsible for generating the manoeuvre calculations - essentially a set of numbers describing the time and direction for the thruster burns that will correct their post-launch trajectories. Since we also did a bit of vectors this week, this article shows that vectors are VERY IMPORTANT if you plan on being a rocket scientist :). I just really like seeing applications of what we learn because most of the physics questions we do just test our theory and they don't really show real life applications and usages of it, but when you read an article that explains a specific event and the physics that is involved in it, it's much more clear about how applicable it is.
 * Herschel and Planck Flight Dynamics: It Really is Rocket Science**

[] "Shanidar 3" is a neandertal that was discovered around 50-60 years ago in northeastern Iraq's Zagros Mountains. His cause of death was a sharp, deep, slice in his left 9th rib. The big question for anthropologists for the past 50 years was how that wound was inflicted. The injury looked like it could've been caused by a long-range projectile or a knife. The angle (~45 degrees downward) at which the weapon entered Shanidar 3's body was consistent with a the "ballistic trajectory" of a thrown weapon. The researchers also concluded that the sweep of a knife could have a consistent downward projectory to inflict the wound but "Knife attacks generally involve a relatively higher kinetic energy... whatever created that puncture was carrying fairly low kinetic energy at a low momentum... that's consistent with a spear-thrower delivered spear." so it was settled that a human spear was most likely the cause of death. This is another real-life usage of the study of projectile motion since the researchers studied trajectory and angles to rule out other weapons.
 * Human Spear Likely Cause of Death of Neandertal**

6..MARCH 29 - APRIL 2 Name: Simone Banh

[] This is a cute comic using Newton's First Law in everyday life.

http://www.physicsgames.net/ There are lots of games here based on some concepts in physics such as forces, although not mentioned explicitly. [] [] Since we are learning about Newton, here are some facts you may or may not have known.

7..APRIL 5 - 9 Name: __Andy Liu__

8..APRIL 12 - 16 Name: Tania-Marie Robyn

9..APRIL 19 - 23 Name:Scott Wood

10..APRIL 26 - 30 Name:Qingda Hu

A universal gravitation calculator with other formulas on the page: []

a text summary of circular motion: [] a video summary of circular motion: []

11.. MAY 3 - 7 Name: AMY HU

12... MAY 10 - 14 Name: Isabel MacKay-Clackett

[] Practice exams along with solutions.

[] Everyone seems to be hot for the LHC, so this may be entertaining/informative.

[] Centripetal force.

13.. MAY 17 - 21 Name: Peter Zalewski [] -site with a multitude of links related to particle physics, such as the CERN acclerator

[] - site with high school physics resources that might be useful for the exam

[] - 10 wierd, modern physics concepts and thoeries

14.. MAY 24 - 28 Name: Vlad Ivankine

15.. MAY 31 - JUNE 4 Name:

16.. JUNE 7 - 11 Name: Reilly Ische

Electromagnetic Wave Simulator!!!!!!! []

[] --- really cool show on bbc!!! []