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Writers Block..
So as you can see from the title I have no idea what to write about this week but hey I'm gonna wing it!
Yeah, so I have almost no clue whats going on right now because of the fact that the whole derrivative thing looks like a divide sign so I'm always thinking we have to divide things. And theres just too many of those triangle signs as well. I wish I learned some of this in Pre Calc or decided to take Math Anaysis. I think I would be much better off if I did.
Otherwise this class is slightly interesting and not too bad with the basic kinematics sparingly weaved in. This test coming up on Friday will be the true deciding factor on whether I'm going to stay in this class or not...
I'm gonna be a business major, it doesn't take calculus based physics to fire someone. Just saying :star:
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My Ladder Idea
Everyday at school we have to climb all of those stairs to get to the upper levels of the school and I get exhausted from it, and so I came up with a brilliant solution that no one really thinks is a good idea. You just get rid of the stairs and we have ladders, and some of them can just sit still and other ones can be like moving up or down so you just grab on and you are changing floors. The physics here is that right when you grab on, you accelerate either up or down, like when you are on an elevator. So, if people felt bad about their weight they could weigh themselves right when the grab on the ones going down which accelerates them downward so they would weigh less than they would when standing on the ground normally.
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Lacrosse
Lacrosse is a contact sport in which players use cradle and pass the ball to score. Players can use their bodies to check or delay other players on the field. Also, players can “check” other players’ sticks with their own sticks in order to loosen the ball from the stick’s pocket. I play attack so the sole goal of my playing is to shoot and score.
The top arm exerts a pushing force on the shaft, the bottom arm a pulling force, creating a type of lever. This forces the head forwards which creates centripetal and the force propells the ball outward. And of course, after the ball finally leaves the stick, there is air friction. Also, the more kinetic energy the throw has, the great distance the ball will trave, especially with a shorter and lighter stick, the ball is much easier thrown.
Lastly, when we lose possession or I am forced to play defense, when I hit an opponent, the force that I use will be equivalent to the force she applies to me.
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Hitler Reacts to the AP Physics C: Mechanics Exam
Some bad language, but definitely funny...
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physics of working out
Working out is the act of building mucsle and exercising your body. In preforming acts of runnig lifting or endurance, you engage in a variety of physics topics including friction, resistence, energy, forces and momentum.
For working out, the act of building mucsle demonstrates an example of resistance and or friction. When lifting heavy objects or moving in a forceful manor, it requires you to condemn in motion that essentialy tears the musles cause the force required is working out your mucsles and you gain strength when they grow back allowing you to deliver a greater force.
In terms of energy, chemical energy is converted, therefor conserved and then transfered to the body in a new form of mechanical energy which allows you to move things and or run and exercise to get in shape. Continueing to expell energy requires more energy to keep up your endurance and allowing maximum potential to work out. By having stored energy or potential enrgy, you have the ability to move and then its transfered to kinetic energy in your work out secssion.
In terms of momentum, bigger and more heavy objects when being lifted contribute a greater momentum against your body inhibiting a greater level or degree of diffuculty for bigger objects and will make more of an impact for you. Because of the more intensive strain it provides. Lesser momentum makes it easier to life and "no pain no gain" implies you will not see great results.
Working out is an action that delivers wide diverse physics topics which are good to understand so you know what is happennning to yourself durring work outs.
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Physics of Star Wars
We all know Star Wars right? A common theme is battles in space with big ships blasting at each other. However, if the movies were based on actual science, you wouldnt hear anything. There's always big booms and laser sound effects, but if you think about it, sound cannot travel through space. Sound is a longitudinal wave, and can be looked at as such:::: : : ::: : : ::::
Longitudinal waves need a medium to travel through, and since space is nothing more than a vacuum, there is no medium, and therefore no sound could travel. Then Star Wars would be really boring, huh? Good thing George Lucas neglected his physics class. You should't though!
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Physics of water skiing
Water skiing involves many different components of physics. The fundamentals of it are based mainly on angles and gravity. When you are trying to get up, you have to make sure you keep your ski at a certain angle so that the water pushes down on the ski, creating a downward force that enables you to stand up. Once the force of the water pushing up on the ski is equal to the force of gravity pulling down on the ski, you are able to stay on top of the water.
Tension is also involved in water skiing because the rope from the boat to your hand pulls tightly, creating tension. When the tension in the rope is constant, you will be traveling at the same speed as the boat pulling you. However, since the rope from the boat to the water skier keeps you moving in a circular path. Since you are moving in a circular path, there is also centripetal force. When the centripetal force is high, the water skier may be moving faster than the boat itself.
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Physics of Pokemon
We all knew this would come eventually, from a person like myself. Personally, I love pokemon videogames- they're fun, entertaining, and you can do so many different things in them. Much better that the televisions shows, for sure.While I was pondering how to tie in my nerdy-ness into a physics post, I came up with this. Hopefully it's not too terrible
So, to begin, let us dive into the game itself-- literally.
Within this "small" (by the standards when it was first made, at least) pokemon Gold cartridge lies a mess of wires, chips, resisters, etc, and the battery that powers it.
It's a complex circut, basically!
When inserted into the game boy, a current is sent out into the game, reading all the information stored on it as the game loads up.
Physics is why it works. Physics is the reason that the electrical currents move through the game, why the save data is read, and why you can even play it on the gamboy in the first place. End of story. Not a single videogame would work without physics.
While playing the actual coded game, as well, physics is at work. In some games, logic doesn't seem to be at play- the physics of it doesn't match up. Pokemon games are actually fairly realistic, compared to some other video games. When you jump off the ledge, you fall down. When you throw the pokeball, it doesn't float into the sky- it continues on it's path and hits the pokemon. In some of the newer games, when crossing a log, you can fall off. I may be tired and rambling at this point, but that's because I can. In some games, like Harvest Moon, there is no logic. Crops growing in less than a month? Cows getting pregnent with a potion? Teleporting?
I dare you to go and play one of your videogames and analize it. Is the physic within it logical, or not? Take some time to take in the world around you- none of it would be there without physics. It's just that important!
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Physics of Dodgeball
Physics is in dodgeball no matter what you may think. There is kinematics along with work and energy. This is almost all in the throw of the dodgeball and how you hard and fast you can throw the dodgeball.
The energy is used for the ball through the air. if you throw the ball it has a certain kinetic energy as it flies towards its target. The energy of this is based on how fast you can get the ball with the initial velocity and the kinetic will remain the same if you neglect air resistance. the work is shown through how much you move your arm and how far the ball has to fly. the ball is displaced and the force you throw with is the amount of work the ball made. there is also kinematics because you can use it to determine the distance that the ball will travel after you release it from your hand.
this all shows that there is more physics in dodgeball than most people realized. the kinematics will show distance and velocity. the work will show how much was done by the person and the ball through the air. and finally there was energy because that there was kinetic and potential along with internal.
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Physics of Playing Guitar
When one plays a guitar, it is so important to remember all the physics behind it. Waves have a lot to do with the sound we hear from them. For example, without a large amplitude, it would not be heard. And when one changes notes, it changes the frequency that is heard. Because the wave is longitudinal, it needs a medium to travel through which is why in a vacuum you would not be able to hear someome playing. The pulses vibrate parallel to the wave because in a longitudinal wave thats their path.
Also, playing the guitar has a lot to do with mechanical energy as one strums the strings. Without the physical motion of the player, there would be no sound. Overtones are a cool thing string instruments have that have a lot to di with waves, which is another physics point!
Next time one picks up a guitar remember all the physics behind it!!!
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Physics of throwing a football
When you throw a football to someone you wont think about physics but physics is happening everywhere. You will make adjustments for everything before you throw the ball. You will make adjustments to your head for factors like how hard you have to throw it or the angle you have to throw it depending on how far away your target is. This is all physics but you dont realize it because you do it naturally in your head.
Whenever you throw a football there will always be a parabolic path because the movement of the ball in the virticle direction is influenced by gravity. As a football travels up, gravity will slow it down until it reaches its peak, then it will stop briefly at that peak. Then the ball will start its acceleration back to the ground because of gravity. This path the football takes is called its projectile motion and here is a picture of what it looks like.
Some equations you can use for situations like this are
vf=vi+at
d=vit+1/2at^2
vf^2=vi^2+2ad
Ay=Asin0
Ax=Acos0
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cell phones
We use cell phones everyday. We look at our phones constantly. Iphone users look at their phones 3x more than normal phone users.
The cell phone uses circuits to power it. It uses waves from cell towers so we're able to call and send messages and stuff. The screen gives off light waves which is what we see when we look at our screens.
We take advantage of technology. We use things without thinking. We learn how to do things fast, but we don't really know how it all works,
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Diffraction of light in my bedroom
Like some others, I personally cannot sleep unless it is completely dark in my bedroom. However with the placement of my bed in a dark area of my room, I'm surprised to find that I cannot sleep because there is still light shining on my bed. But why is there still light if the window in my bedroom is behind my bed, next to a wall? Shouldn't the light be blocked by the barrier? No! The light from the window still shines on to my bed, despite the wall barrier and placement of the bed and window, because there is a diffraction of the light waves.
Diffraction occurs when light waves move past the edge of the barrier, bending the stream of light to another area. In my case, the light from my window was diffracting out past the wall barrier and around to the area where my bed is placed. The amount of diffraction of a light wave depends on both the wavelength of the wave and the size of the space the wave is traveling around. Because the wavelength of the light is constant and it is moving around a large space in my room, there is little diffraction.
Based on my research on diffraction, there is not much I can do about lessening the light shining onto my bed in my bedroom. Even if I were to make the space that the light waves pass through smaller, diffraction would still occur. However, I did learn what causes diffraction and what effects the amount it gives off. It seems that my only solution is to get some very good, very strong curtains!
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The Physics of Swimming
As summer gets closer, the weather gets warmer and everyone itches to get outside. One of my personal favorite things to do on those hot summer days is to go swimming! So many people enjoy it and it is something that they do all the time, but the majority of people don't stop to think about all of the physics that is involved in it. And there is a lot!
First, the most obvious is the difference in gravity. When you are just walking around normally, you stay on the ground. You never begin to float towards the sky because of the force of gravity on earth. The force of gravity is 9.81m/s^2. However, as you may know, when you are in a pool or the ocean it is very hard to stay on the ground because there is nothing pulling you down. But you are still on the earth... so how can that be possible? Although the force of gravity is the same, there is an additional force acting in the water called buoyancy. This means that when an object is put in water, it will displace the amount of water equal to its volume. This is why objects appear to be lighter when they are in water.
There is also a lot of resistance in water. Water is about 1000 times more resistant than air and about 91% of a persons energy is lost through drag. Therefore, when swimming competitively, swimmers need to maximize their streamline. They can do this by wearing swim caps. As you can see, there is a lot of physics in swimming. So next time you jump in the pool, think about all of the physics that is going on! Thanks for reading
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Physics of a roller coaster
Butterflies in your stomach and adrenaline rushing through your veins, roller coasters are an extremely thrilling experience to the riders. While on them, have you ever thought about how they really work and why?
Roller coasters actually operate similarly to catapults and in some cases they actually use catapult launches. These systems operate by very quickly building kinetic energy and exerting it to the train. An example of this system is called the linear-induction motor. This system uses electromagnets to create two magnetic fields that attract. Overall it's a good system because it creates precision, control, speed, and durability.
Of course with such an efficient operating system, the train needs a good way to stop and let the passengers off. To create the maximum break efficiency, the breaks are instead built into the track instead of on the train itself. There are clamps connected to hydraulic systems, so in case of emergency the clamps tense and friction slows down the trains movements.
When actually on the ride, you are part of the energy of the whole system. The ride stores massive amounts of potential energy when ascending up the hills. At the highest point, the train has the most gravitational force possible. After the peak, the train releases the potential energy and becomes kinetic energy.
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Kaleidoscopes Explained
Kaleidoscopes use light and mirrors to reflect objects that create patterns. There are multitudes of different varieties and types, but they all follow the same basic principles of physics. To make a kaleidoscope, you would need some type of round, hollow material and two to four mirrors to put inside of it. Aluminum foil can also be used as a reflector.
On one end of a kaleidoscope, there is an object container that holds the objects to be reflected. Then this can be closed off with plastic or glass. This layer of clear material not only holds the objects in, but also filters light through to reflect off of the objects. Some versions of the kaleidoscope toy rotate to easier change the position of the objects located inside.
When you look through the hole of a kaleidoscope, light filters through the glass or plastic on the end of the device and then illuminates the objects and reflects them off of the mirrors or other reflective material. Your eye then sees these bouncing reflections, which creates the patterns that you see. This simple, but fascinating toy has brought joy and wonder into the lives of people for hundreds of years.
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How Airplanes Fly
I was thinking about going on vacation since it is now summer and that lead me to the question of how to airplanes fly. I have come to find that it is the result of Bernoulli's experiment that resulted in the founding that if air speeds up the pressure is lowered. This explains how the wings are lifted. As the air goes faster over the top of the wing,it creates the region of low pressure.
After finding out this informetion I came to the question of, why does the air go faster over the top of the wing? I came to the answer that the distance that the air must travel is directly related to it's speed.
The avergage speeds of the air over the top and under the wing are determined by measuring the distances therefore we can calculate the speed using our formulas. From Bernoulli's experiment it is stated that we can find the pressure forces and therefore the lift.
A wing generating lift is used through Newton's first and third laws. The first law states that an object in motion tends to stay in motion and object in rest tends to stay in rest unless a force is acted upon it. His third law states that for every action there is an equal and opposite reaction.
Hope you enjoy this post!
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Faster or Slower
What's better.....being faster or being slower? Obviously faster. Have you ever wondered why some people are faster than others though? Are there trends?
To understand the basics physics of running, you can think of your arms as pendulums. A pendulums velocity depends on the length of the pendulum, not the mass of the bottom. If the pendulum is shorter, the speed of the mass at the bottom is faster. Your mass at the end of the pendulum you can think of as your feet. Then proceed to assume that your legs are the pendulums. In order to shorten the pendulum...you have to bend your knees. Obviously you cannot run well with your knees locked, but you will run faster if your knees are bent.
You can also think of your arms as a second type of pendulum. If you bend your arms at a 90 degree angle and swim them in stride with your legs, you will then proceed to run even faster.
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Physics of Shooting a Sniper
In many of our video games and even in real life we sometimes come into contact with a hunting rifle or sniper rifle. For some games its just point and shoot and you hit him but for some games and in real life you have to compensate for the drop of the bullet. But did you also know that, that bullet you just shot and the case of that bullet as it flies out are hitting the ground at the same time? But back to the drop of the bullet when you fire. When you fire really any gun you have to aim a bit up from your target depending on the distance you are at. Gravity pulls the bullet down even if it might seem that it would take awhile as the bullet comes out of the gun gravity is acting on it and the bullet is being dragged down but slower that other objects because of the speed it is at. So next time you go hunting and you think that you are going to get the animal right in the sweet spot try aiming a little higher then where you want it to go, then it might be right on.But to come back to something, the drop of the bullet and the shell of the bullet. These two things drop and hit the ground at the same time. As you shoot the bullet goes flying off at high speeds, but when you pull the bolt back on the rifle and the case flies out and hits the ground, both parts of the bullet have hit the ground. They are technically experiencing the same thing its just the bullet shot is experiencing it over a greater distance with a greater speed.
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Reflecting On Physics Class
It seems like just yesterday I was beginning regents physics class, and now it's almost over. It's been a struggle, but somehow, I got through it. Since this is my last blog post ever, I wanted to take this opportunity to reflect on this year in regents physics, so here it goes.
When I first started this class, I knew right away I was going to have a hard time in it. I have never been very good at science, but I figured since physics involves a lot of math, it would not be too bad. I was mistaken. Usually in the beginning of a difficult class, I never understand anything at first. But one day, all of a sudden, I will just automatically understand it. That never happened for this class unfortunately.
Though this class was extremely hard for me, I did manage to learn a couple of things. There are some units I kind of enjoyed, and the catapult project was fun. A lot of the demonstrations were pretty cool too. The most valuable thing I learned this year was that your attitude can completely make a situation either better, or much, much worse. When I walked into class with a negative attitude, I never learned anything. But when I walked in with a semi-positive attitude, I actually picked up on a thing or two.
Though I will most likely never take a physics class again, I have to say that in a way, I'm glad I stuck with it throughout this year. Dropping did occur to me a few times, but if I had, then I knew whatever work I had put into this class would have been for nothing. In life, everyone has to go through things they might not want to, but in the end, things turn out to be not so bad. As many times as I might have said I hated this class, I guess it really wasn't so bad after all. And taking this class really made me admire anyone who goes into this field, because it is not easy.
To conclude my last blog post ever, I just want to thank Mr. Fullerton for putting up with my horrible test grades and negativity all year. Taking regents physics class was definitely an experience I will never forget, and I haven't really decided if that's a good or bad thing yet. Just kidding! Maybe.
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The Physics of Throwing Darts
Dart throwing uses physics to get the dart to the bullseye and get the highest score possible or if you are playing different dart related games to get the numbers that you need. Throwing darts uses different parts of physics to have the dart hit the target in the area that you want it to. Projectiles and energy to have the dart move through the air and to the target.
http://t0.gstatic.com/images?q=tbn:ANd9GcRkg2zI4qLuZQhKx--Y_UdKk5MaKRGFgmx59CgycvZwAWUIGoRImw
The darts are a projectile because they are thrown at an angle and you need to find the best angle with the correct initial velocity to get the dart to the board. The angle at which the dart leaves your hand is usually less than 45 degrees so that the dart goes toward the board and not at the ceiling. Even though the optimal angle for most anything else is 45 you need to change the angle and the initial velocity to get the bullseye. the gravity brings down the dart and this is why you need to aim 'higher' than the bullseye.
http://t0.gstatic.com/images?q=tbn:ANd9GcTb9a-28ZH2rwYKXkuDsWXqvIHDSGSg2riJ3jAWzUw8DlJL8IZmxQ
Also you use work because you move your arm which is the displacement and you force the dart to move forward toward the board. Darts use work to make their way to the target because they have to move and the force exerted by the person is on the dart. The darts use the work to make it to their destination. This shows that darts uses physics, by using different equations you can find out everything you need to know.
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physics on roller coasters
Everyone enjoys the thrill of roller coasters, but not everyone takes the time to realize how they relate to physics. Roller coasters relate to physics because of the potential engery and the kinetic energy they use. As well as gravity, and using forces.
A roller coaster uses both potential energy and kinetic energy. It stores the energy as the roller coaster is inclining up the hill because of the gravity that is pulling it down creating a greater distance. As the potential energy is released once it has reached the top of the hill, kinetic energy takes over as it is going up the hill. Roller coasters tend to be converting potential energy and kinetic energy throughout the entire ride. For example, when there is a small hill somewhere on the ride, the train will store potential energy again as it is going up that hill until it goes back down. Gravity tends to do the same thing throughout the entire ride, but in different ways. If the roller coaster were to be moving up the hill, then gravity will be pulling the back of the train so it decelerates. If the roller coaster were to be moving down the hill, then gravity will be pulling the front of the train so it accelerates.
I've learned many things in physics and relating them to things I would of never thought about makes the topics so much more interesting!
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physics on swimming
Now that summer is practically here and watching my parents open the pool, I decided to do this physics blog on swimming. Swimming relates to physics a lot more than you think. Newtons first, second, and third laws play a huge part in the physics of swimming.
Newtons first law shows the difference between static and dynamic forces and why it takes extra forces to get through two different forces. A static forces is when a body is at rest it stays at rest. The movement you feel once you get your body to move it you overcoming the static force. A dynamic force is when a body in motion wants to stay in motion. Newtons second law gives us the explanation as to why someone can swim faster than others. For example, if someones mass is equal, then it would be all about the amount of force they use to take off. Newtons third law states for every action there is an equal and opposite reaction. When swimming and doing the breast stroke,the water moves down the side of you. The equal reaction would be pushing the water back on you while the opposite reaction would be the reason why you are moving forward.
This proves that physics is everywhere, no matter what you do!
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physics on softball
Sports are a huge part of most peoples daily lives. When I was younger softball was always something I wanted to do but I chose other activities over it. I decided to take a minute and learn how softball relates to physics since it's one topic I am interested in.
Pitching in softball is related to physics because of the velocity. Pitching can be very difficult because you need to know all the different curve techniques. In softball, there are six main pitches, the fastball, change-up, curve, screw, rise, and drop. The fastball is supposed to stay on a straight path at a constant height to the ground. This would mean that the softball would need to go at a constant velocity as well. The change-up which is a slower pitch that occasionally drops right at home plate, would need to have a velocity the decreases rapidly. The curve, screw, rise, and drop are moving pitches, meaning they will bend in a different direction. The curve and screw bend in different directions which would mean that velocity would change with direction. The rise and drop would bend up and down, so their velocities would change for the same reasons as the curve and screw. Velocity is one main component of physics that effects softball.
With doing research on this topic I learned more about the sport as well as how physics is involved with every step of this sport.
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