lshads

There are two categories of snowboarding: Freestyle and Freeride. I fit more into the freestyle category, but i wasn't always. Two years ago, i started snowboarding recreationally. Seeing all of the kids doing impressive tricks on their boards, I wanted to try my hand at the sport. However, I found rotation to be very difficult for me, and i could see why: with my big feet, I could only rent a large board. In any case, angular momentum is conserved, but with a really large moment of inertia due to both the heavy weight and length of the board, my angular velocity suffered. this year, i am using a board that is 10 centimeters (a very large difference) shorter and half the weight. The reduction of the moment of inertia means that I can spin much faster now, and even show off a little bit! Thank you, conservation of angular momentum! For added fun, here is Torstein Horgmo, who uses a board almost 10 centimeters shorter than mine! He spins quite fast!

Here are my top 5 tips to performing the best possible: 5) TARGET THE UNITS IN WHICH YOU PERFORMED POORLY ON TESTS. If you aced that rotational motion test or blew through the early dynamics tests, odds are you don't need to prioritize your study sessions around them. Focus on the tough stuff that you know you could use the extra points for. Getting those extra points that few students usually get will boost a 3 to a 4 and a 4 to a 5 4) DO EVERY PRACTICE QUESTION POSSIBLE. Each released AP exam is a gift from those old ladies that make these tests. Use them. Especially the free response, since it will help you develop the ability to work through the problems for maximum points 3) BRUSH UP WITH THE TEXTBOOK. After feeling pretty down about our first electricity test, i felt inclined to pick up my textbook. after blowing the dust off and shooing away the spiders, i opened the book and gained relevant information that genuinely helped me understand the concepts. Don't underestimate the power of the textbook! 2) EAT FOOD BEFORE ENTERING THE TEST ROOM. If for no other reason then avoiding the embarrassing, silence-piercing growl of your stomach, eating a great breakfast and bringing a snack to the test will make you prepared to focus on displaying your knowledge and not your appetite. 1) KEEP YOUR MIND OFF THE TEST BEFORE ENTERING IT. Sometimes, trying to slip in that last minute cram will only hurt your long term memory. Trust that all of your hard work will pay off with the grade you deserve!

I'm with denverbroncos, if you truelly wanted to "hypotheticaly" cheat practice, you could have just not shown up...

I personally think imagining everything as an equation would be somewhat irritating at some points. I mean, who really wants to know the constant of making waffles?

I think free body diagrams are also very important! And looking at a problem to determine whether linear or rotational motion (or both!) are necessary to save a lot of hassle!

Also, an explosion or two might be nice! Nothing like conservation of momentum to spice things up a bit!

When you're having trouble with E&M homework, just use the right hand rule! Step 1: Extend your right arm forward from the elbow. Step 2: Keeping your palm facing to the left, stick out your middle finger. Step 3: Rotate your hand 90 degrees clockwise.

Not to debunk, but 20 amps would have been more than enough to kill you. A study at ohio state indicated that one ampere would cause severe burns and immediate stoppage of breath. The major thing about wiring is the fact that it is not ideal, therefore, the wires themselves will apply thousands of ohms of resistance!

Also, using ballpoint pen would require the friction to function, as the friction causes the ball to rotate which inks the paper.

Don't forget Pascal's Equation! P = pgh, also observed under a hydraulics question, F1/A1 = F2/A2 !

Chemistry joke: Two guys walk into a bar. The first man says,"I'd like some H20." The second man says, "That sounds good! I'd like some H20 Too!" ...The second man dies...

This is really interesting! If only the one at our school actually worked...

Seems perfect to me! I don't like hot coffee, but I do like pretty things! But maybe you should look into an electron-excitation mug, just for kicks...

Yeah, and don't worry Dave! Even if Mr. Fullerton eventually gives up on you, Jesus will always be behind you! Go Physics!

Branches are especially damaging, but you could still survive! When they make contact with surfaces such as a house, they have a high impulse since it can remain in contact with the siding. Likewise, those who flinch will also take on more pain, half because their muscles tense up, and half because they are taking more total force. Those who are able to just take on the initial shock will most likely incur less damage to their body.

Friction is a pain in the butt when we look at kinematics problems. It is the main non-conservative force, meaning that it changes the total energy in the system. When fining net force or total energy, friction is always a tricky negative sitting in the dark to take points away from innocent physics students. The statement "if friction is negligible" yields an instantaneous sigh of relief, since our job just became that much easier. So why should the universe have friction at all? Well, with no friction, there is no fundamental way, other than air resistance, to reduce a net force. Every object would continually accelerate until it collides with another entity. So unless we all want to accelerate and bump into people forever, friction should probably stay for a while. It would be a pretty nice way to speed date, however.

Okay, here's my thoughts on physics C so far: Although the tests are challenging, we are more than prepared for them, and maintaining the difficulty will make the AP test at the end of the year That much more accessible. I enjoy the fact that we expand in every direction the fundamentals we developed in physics B. In this way, the concepts are not too challenging , and the calculus application fits into past knowledge quite nicely. In fact, the calculus problems we are given are actually easier in comparison to the other conceptual questions, even if it's still early in the game and I'm sure it could get pretty rigorous. I like the independence we are given in the momentum unit, and I feel very productive and I feel good about the test coming up. I would like to do other units in this fashion, as long as we can prove the effectiveness through our test scores.

In Washington DC, there is a building with very interesting sound diffraction patterns and design. Sound travels in waves in straight lines until they reflect , get absorbed by, or refract off of a medium. This room was designed with bipartisanism in mind. The desks were set up so that sound would interfere with itself so that opposite members of congress could not hear what they were saying. However, the architect overlooked basic resonance, since the arches were placed just right so that members, if they were by chance friends, could hold a rather quiet but covert conversation. If only we had this capability during tests!

I have a phun physics problem for you guys to try out! A 5 kilogram ball is being lifted up. It's potential energy is increasing at a rate of 3.5 Joules per second. What is it's velocity at t = 15 seconds? (HINT: You might find implicit differentiation helpful... Sorry non-BC kids)

As I am driving my car "55" miles per hour on the highway, I throw a baseball "55" miles per hour in the opposite direction. Amazingly, the creepy man standing on the side of the highway watched the ball fall straight down. Since the velocities are equal and mass doesn't change, there is no net momentum, and therefore no net force in the x direction so the ball will only be affected by gravity acting straight down. Likewise, if I threw the ball 45 mph, the creepy guy would actually see it traveling 10 mph in the same direction of the car. Physics has it's truly stupefying moments

When I was in the 8th grade, I always dreamt of taking physics in high school. Unfortunately, my motives at the time were somewhat naive; I used to think that a physics background would allow me to never miss-throw a baseball again. With a handy protractor, I believed that I could throw a baseball any distance I desired with little effort as long as I threw it at the perfect angle. Physics has since crushed this dream: the ball will only have a finite amount of time in the air, based on the component of initial velocity in the y direction. I guess I'm just going to have to do more pushups...

This summer, I worked under the tutelage of Wade Bittle and Dr Steven Craxton at the university of Rochester. I worked on a project called Dewpoint calculation using flow transducers. The preliminary time at the internship was spent gaining a basic knowledge of integration, and learning about the omega lasers functions and work schedule. Although we never got to see a shot (a single blast would vaporize our corneas) we had a good understanding of the process going on. When fusion occurs, there is still leftover deuterium(a hydrogen isotope) My project took this deuterium and combined it with oxygen in order to reduce the radioactive emission on the town of Brighton. Also, with the code I wrote, we can take in data of the condensate flowing into it, analyze the contents of it, and calculate the mass of the condensate removed in kilograms. Since the container is limited in capacity, this code allows the LLE to figure out when it is time to use the next molecular sieve.

Hello, physics students! Lately I have taken an interest in quantum mechanics, in an attempt to improve my grade, but mostly because it is a truely stupefying. It still amazes me that briliant minds like Boltzman, Heisenberg, Euler, among countless others could possibly explain entities that they could "easily" touch but never physically see. Today, I want to give a brief background on the foundation of Quantum Physics: The uncertainty principle. It is this equation that gave Werner Heisenberg credit as the "father of Quantum Mechanics." This equation asserts that there is a fundamental limit to the precision of any measurements taken. [ATTACH=CONFIG]512[/ATTACH] This assertion is only effective when relating specific pairs, such as momentum and position, energy and time. The concept of this equation is commonly confused with the observer effect, the theory that literally, "a watched pot never boils." The uncertainty principle has been proven to be inherent in all wave-like systems, and the application of it is imperative in superconducting and quantum optics.

Hello world! It is a pleasure to make your aquaintence. I have taken a liking to physics since I took AP physics B. Assuming that we are all nerds, I would guess that this statement would be common (we're all making a blog post on a physics site, arent we?) I am strong in logical reasoning and arithmetic, and would like to improve my test-taking skills throughout the course. I am taking AP-C to further my experience in the field to prepare for college and future work. I can't wait to use calculus to make physics simpler. I am excited for the interesting labs and projects such as the catapult and bottle rocket (We need to defend our title). I don't feel any specific anxiety for the class other then a little worry about grades. EDIT: Had to add a little information and now it finally posts to the blog!

Just in case any of you were wondering, this is what would happen to a baseball if a pitcher could approach the speed of light! http://what-if.xkcd.com/1/ [ATTACH=CONFIG]479[/ATTACH]