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Physics of a Toaster
This is completely random, but as I was pondering ideas for a blog I discovered that there is a lot of physics involved in toasters! 
Most appliances that heat up, such as hair dryers, irons, and toasters, work by changing electrical energy into heat energy. Toasters are plugged into a source of electricity. From that source, the electric current runs down the wire and into the toaster. The inside of each appliance contains loops of different metals. The electricity does not easily flow through the metals. The metals slow down the electrons and hold up the current, which is resistance. Resistance is a measure of the tendency of a material to resist the flow of an electrical current, in physics. The higher the resistance, the hotter the metal will get. This happens because of the friction of the electrons.
The wires begin to heat up and glow because they are so hot. This heat is what toasts the bread.
Overall this is very random, but its cool to see how everyday appliances like toasters relates to physics!
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Latest Entry
The New Year
Well, its offically happened. I have accepted that summer is over and the days of sleeping in and golfing mid-week are over. I'm back in the swing of things. Grading papers, teasing students, harassing the chemistry teachers. I even have a new partner this year. For the first time, Eastridge now has two physics teachers! I'm enjoying having another person who understands me in the building to bounce ideas off of, and I think this will be a benefit to all students taking physics this year and beyond.
Looking forward to using all APLUSPHYSICS.com has to offer as well. Hope everyone has a great year.
---END TRANSMISSION---
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Latest Entry
Life, Liberty and the Pursuit of Physics
Just over a month ago, when I walked into physics class for the first time, I thought it'd be a drag like all the other science classes I had to take. I was that girl who's heart was filled with trombone, head filled with music and the only reason for taking physics was because my counselor made me; I had absolutely no interest in the course and that was the attitude I assumed would carry throughout the entire year. Why did I care what physics had to do with my life? What did it matter?
Then, probably a week ago, I found myself thinking more and more about physics. When I looked around me, I started wondering what type of physics is involved at what I was seeing. What physics is involved in a trombone slide? What physics is involved with the sound I hear when music is played? While walking home, I began thinking about the physics of airplanes, of cars, of myself--and tonight it finally hit me that physics is all around, that it's everything. I'm seeing things in a new perspective; I'm questioning more, I want to learn more. I don't view things the way they appear anymore--I look at something and wonder how physics is involved. Even though in class we're still working on free-fall, I can't begin to describe how much I've learned so far--and it's only October.
Last month, I was just another girl forced to take another class she didn't care about. Today, I'm a person who's seeing everything differently; who constantly questions things and constantly wants to learn more, all because of physics.
And it's awesome.
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Latest Entry
Car Crash Web Quest
Gunnar Miller' date=' Nick Nolan, Kaiya Williams[/font']Car Crash Web quest
The car crash web quest included two vehicles a Subaru (200kg) which was at rest and a Cadillac (300kg) which ran into the Subaru. The first objective we tried to solve for was the velocity of both vehicles after the crash. We were given the acceleration of both after the crash which was -3m/s^2 for the Subaru and the Cadillac’s was -2m/s^2. The distance that they went after the collision was also provided Subaru (24m) and the Cadillac (2m). we knew the car cars came to rest after the crash so Vf=0 for both. Once we knew we had three of the five solving for Vi would be simple. We used the formula Vf^2=Vi^2+2ad we plugged in and did two separate equations for both vehicles and the Subaru’s initial velocity was 12m/s and the Cadillac’s initial velocity was 2.83m/s.
Next we were required to find the momentum immediately following the collision with our physics knowledge of the formula Momentum=(mass)(velocity) or P=mv we had both vehicles masses and velocity’s prior to the crash. The way we solved was as follows Cadillac: P= (3000kg)(2.83m/s)=8,490kg*m/s Subaru: P=(2000kg)(12m/s)=24,000kg*m/s. after finding these two momentums it played a huge role in solving the rest of the lab.
The next part was finding the Momentum before the collision this was a very simple step in the lab we knew that before the collision the Subaru was at rest so the momentum of the Subaru was 0kg*m/s knowing the law of conservation of momentum we knew the total momentums of the vehicles after the crash would equal the momentum of the Cadillac before the crash. This lead us to add 24,000kg*m/s+8,490kg*m/s= 32,490kg*m/s.\
Finding the velocity before the crash was similar to the problem before we knew the Subaru’s velocity was 0m/s because it was at rest. To find the Cadillac’s velocity before we derived the formula Vs=(msuv)(vsuv) + (mwagon)(vwagon)/ msuv = 32490kg*m/s /3000kg= 10.83m/s. Knowing the speed limit was 35km/hr so we converted 10.83m/s to 38.99kh/hr so we knew that the Cadillac was speeding before he hit the wagon.
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Latest Entry
Cooper Rd. Speeding lab
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Are Cars Speeding on Cooper Road?
Ray, Ben, Julia, Madison, Damian
For our speeding lab, we had to determine if the cars driving north on Cooper Road were speeding or not. We were given a measuring tape and a stopwatch and were left to figure the rest out on our own. We had to describe the kind of car and have at least two sets of data for each car.
First we figured out that there are 15.6 m/s in 35 miles per hour so that we would have a baseline for our calculations. To determine a cars speed on Cooper Road, we extended the measuring tape 15.6 meters and timed how long it took for the car’s front wheels to go from the start of the measuring tape to the end of the measuring tape. We recorded the data for ten cars and wrote a brief description of each car so that we could compare our results with Mr. Fullerton’s radar gun.
After recording the speeds of the cars on Cooper Road we went to are data and compared it to what was recorded with the radar gun. Overall are data was not that off what the radar gun recorded however what data that was off was usually lower then what the radar gun got. In reflecting on this lab we could have had more people timing the cars which would have resulted in more accurate averages. With the timing there could have been someone standing at the beginning of the measuring tape saying “GO” so that the timing would begin at the same time and “stop” once the car got to the end of the measuring tape. Another way we could improve this lab would be through having Mr. Fullerton at the same spot as us recording the cars speed because some cars continue to accelerate as they continue. A final problem we had was that are timing system was very close to the traffic light so not all the cars we recorded were at full speed by the time they reached us.
Are results concluded that there is not a speeding problem on Cooper Road. Our data showed that the average speed between 10 cars going north on Cooper Road was 34.902 km/hr which is below the speed limit of 56.3 km/hr. which is equivalent to 35 mph. We had no one over the speed limit or even very close to it which was a positive conclusion from the data. So no we concluded that there is not a speeding problem on Cooper Rd. if there is anything there is a problem of cars going too slow.
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Introducing Bob enright
I am a senior at irondeqoit, i play lacrosse and plan on going on to college next year. I am taking regent’s physics to further my knowledge of science and also because i thought that it was an interesting topic. I would like to come out of the class with a greater knowledge of science as a whole. I am not very nervous about the class except for the new material that i have to memorize. I plan on staying on top of the work load, staying focused in class and working with my classmates.
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Latest Entry
Why am I in AP-C Physics?
Recently I've been thinking: Do i really want to take C in high school? So far i feel completely overwhelmed but have been waiting for that "ah-HA!" moment that seems to be drifting away. I think of the students that are taking ap econ, calc BC and physics C, and they seem to be doing just fine, so why can't i seem to handle ap econ, calc AB and physics C? I would feel quite frankly, like a lame quitter if i dropped out, and even the term "dropping out" has, "you fail" written all over it to me. But at the same time I'm afraid that i've overloaded myself and all my grades will suffer from it especially when the material gets more difficult. And the reason i'm doubting my choice to take C is that out of all my AP's, im most confused in this one. Also I researched and most the colleges i'm applying to wont take 2 ap physics credits. Also the curriculum of the degree i want (5 year professional degree in architecture) in the schools i have in mind wont even let me take physics 101 until my sophomore year (Syracuse), or don't require me to take it at all (Cornell). Which i thought was strange but all electives say "free in department elective" or "free out of department elective." But if i do have to take it again in college, are the benefits of taking it now worth all the stress this year? Additionally, if i end up using it as an actual architect which i assume i will, I would rather take it closer to when i'll actually use it so i remember the material. In short, I really don't want to be taking this course *at this time.* Don't get me wrong, i'm interested in the concepts and material, I just don't know if i can handle it right now with my other aps, the truck load of college stuff we have to take care of, and general hygiene.
sincerely
Stressed Out / Worried :banghead)
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I had to do something on basketball
March is here and along with it comes warm weather and basketball. I thought that a good way to celebrate it would be to put up my basketball hoop. I went to put it up in my lawn (i have it facing the street cause no one ever comes driving down my street) and left it balenced so i could get the sandbags toput on the base. However, the hoop wouldnt stay up. The center of mass isn't the center of the base because it isn't symetrical. So, i placed a shovel on the base to provide enough tourqe to oppose the motion so that it could throw the sandbag on to keep it in place. I took a task that shoulda been easy and made it hard because i forgot about basic physics. But i gotthe job done.
Random Sports Fact: Harvard is in the tourney for the 1st time since the 1940's
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A cat falls 19-Stories and survives
I saw a video on yahoo news today where a cat falls 19-stories and survives and the reporter seems stunned. If only she took physics with us she would know that is is because of the aerodynamics of a cat and the terminal velocity of their fall to be able to spread themselves out to slow themselves down.Here is the link to the video.http://news.yahoo.com/video/bostonwbz-15750588/cat-survives-19-story-fall-in-boston-28691018.html
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Spontaneous Combustion
Ok, so everybody has obviously heard of spontaneous Combustion but doesn't know what it really is, atleast I didn't before this. For spontaneous combustion to work there has to be a Pyrophoric substance. A Pyrophoric substance is something that reacts to strong oxidizers such as oxygen or water. Anyway the Pyrophoric substances have very low ignition points which are ignited by contained heat in the pile or where ever it is. Examples of a Pyrophoric substance are sodium, haypiles or compost. The biggest cause of the creation of heat for the ignition of the substance is from bacterial decomposition, where the bacteria break down something and by doing so release heat that is trapped and therefore builds up the heat in say the pile of compost which eventually ignites the pile of compost also know as spontaneous combustion. For a really big bang the most volitile Pyrophoric substance are Rieke metals which actually explode when contacted by Air.:tyrannosaurus: and dinosaurs are cool hence the t-rex
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BUrkhart's Physics blog
please ask questions or leave comments here
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the physics behind taking your physics test!
After taking this class we now can all answer the question that stumped us at the beginning of the year; What is physics? its everything. The crazy part to think is that its actually true. Anything anyone could ever think of has to do with physics. Tomorrow we take our final for this class, struggling to remember every little thing we can. The crazy part is that taking that test is physics.
If we're lucky, we'll drive to the test. How does a car run? and electric circuit. physics. Along the way you probably have to pick up a friend or two, and you use your cell phone to tell them you have arrived. Another electric circuit. Hopefully before all of this you showered, and thanks to gravity the water fell down on you instead of floating. After that you stumble around your room trying to find clothes that match thanks to all the colors we are able to see on the spectrum.
Arriving at the school, you have to have an acceleration from sitting in your car to get into the testing room. Although some will be moving at an incredibly slow constant pace, trying to avoid the test. Sitting in your test you will put a force on the chair, which will then push up on you at the same force to keep you in that chair. Thanks to the florescent lights we will be able to see our test.
So while you're studying, don't say you don't know much about physics! Because everything you do, even going to the test is physics!
Best of luck!
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the end of physics
Now that physics has come to a close, I think my last blog post should be about what topic interested me the most throughout this past year! Although physics by far was not my favorite class, there were definitely units that were actually quite amusing. Through this year we have learned about friction, kinetic energy, waves, potential energy, newton's laws, and tons of other things. But the one that stood out from all the rest was electricity.
In the electricity unit, we had many cool labs that were very interactive, and I learned many things that I never knew about before. For example learning about conductors was pretty cool, learning about what materials allows charges to move easily and which ones do not was expressed in one lab where Mr. Fullerton laid out different types of conductors and my group had to figure out which one's where conductors and which ones were resistors. This was fascinating to me because I never knew how many different conductors there were and how to really tell the difference between a resistor and a conductor. A resistor is said to be the flow of charge itself. Conductivity and resistance definitely goes hand and hand, without one another neither would exist.
Coulomb Law-looks at forces created between two charged objects. As distance increases the forces and electric field decreases. In order to show this successfully, Mr. Fullerton arranged magnets at different tables and we experimented by bringing the magnetics closer together then separating them further and further apart. By doing so, we could see that the closer the magnets are to each other the greater their force and vise versa, which was appropriately explained throughout Coulomb law.
AC & DC current- this topic was very interesting to me because I never learned about it before and it was actually quite interesting. There are said to be two different types of current in the world, one being direct current which is a constant stream of electrons in the same direction repeatedly, and alternative current which are charges that reverse direction. What was also interesting to me was the electrons can only flow if there is a current, I thought that electrons just always continued to flow but in reality they need a current. AC currents are used more around the world then DC current because its cheaper and easier to increase and or decrease the amount of energy. Most of the appliances in our homes are used with AC, DC is very unlikely to find. However you can also change DC to AC with some power converters as well.
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Watch out for lightning!
Every time theres a huge storm its hard to keep our eyes off the pounding rain on the pavement, or dark clouds or the lightning that zaps out of the sky to the ground and is gone in a moments notice. The sudden flash of light isn't just to scare children or puppies though, its actually an act of nature and physics, believe it or not. Lightning is based off of the physics of electromagnestim, which is the science of the interactions between charges, electric fields and electric currents. Lightning is caused by the build up of electrostatic charge in clouds. Within this electrostatic build up, one part of the cloud builds up with positive charge while the other part of the cloud builds up with negative charge, this causes a large separation of charge within the cloud. When this separation of charges within the cloud becomes big enough this may lead to the negative charges leaping to the positive charges of another cloud. When this happens, sheet lightning occurs. What we usually see out our bedroom windows during a storm is when lightning strikes the ground.
There are a few different types of lightning, the lightning previously referred to (from cloud to ground),the ground acts as a pool of electrical charge, and when the clouds gain charge, the ground attempts to balance out the charge by gathering the opposite charge beneath the cloud system. When the difference between charges becomes great enough that leads to a breakdown of air between the charges. When this break down occurs that is when lightning occurs and it either occurs from cloud to cloud or from ground to cloud. What usually happens is the lightning starts at the ground and flows upward, it happens vice versa too, however it usually begins at the ground. To go into further depth, when a pool of negative charges are collected at the bottom of the cloud, that forces the negative charges on the ground to be pushed away. When this happens, that leave the charge of the ground positive. So usually a stream of negative charge travels down to the postively charged ground, when this occurs a stream of positive charges comes up from the ground because the two opposite charges attract. When the streams of charge come in contact with each other they create a very conductive path which allows a sudden down surge of electrons to jump to the ground. This is the lightning.
The whole reason for the lightning is because of the basic electromagnetic principal that opposite charges attract. The reason that opposite charges attract is so that they can reach an equilibrium. Two oppositely charged objects want to be close enough so that they can discharge and become neutral or reach equilibrium. The different charges are due to the amount of electrons or protons in an atmosphere, electrons have a negative charge of 1.6 x 10 to the negative 19th coulombs, enough electrons and the charge in the atmosphere (in this case cloud) is negative so a deficit of electrons creates a positive net charge. To explain the breakdown of air that creates lightning, ionization will have to explained. When two opposite charges are separated and cannot exchange electrons through contact, they must exchange electrons through a medium. In the case of electric storms, the air becomes the medium for this exchange. However air is not conductive, so this means that electrons cannot pass through it easily, for this problem to be changed the process of ionization must occur. This occurs when when a large amount of charged particles try passing through the medium this then causes the electrons and protons of the medium to separate, when that happens it creates a path between the two regions, and then the charges can flow.
Lightning as you can see is a very fascinating topic! Charges are all around us even when we can't see their effects, so its cool to be able to actually SEE the results that charges have in our world and in our atmosphere!
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Time Travel
I'm sure you have heard about, read about it book and even seen it in movies. Well I am hear to give you a basic overview, it is very complicated once you really look into it. I'm hear to shed light onto this for all of you. (All with out the use of a flux capacitor or a Delorean.)
I'm going to talk about the types into the future or into the past. Lets start with the future. In some ways this is on display everyday. The clocks on the GPS satellites need to be adjusted due to fact that when you are moving
time moves slower thus you age slower. In theory, you could send someone out into orbit for say 20 years, he would only age 20 year when family member and friends on earth would age 30 or 40 years. And the faster you move the slower time would move but you would run into the problem that the faster you move the more massive you become.
Something I think that cool about time travel into the past is in some ways we see it all the time too, ever night to be exact. When you look at a star, your not seeing how it looks now, you seeing how it look 100, 200, even 1000 years ago. Now don't be worried, I know you though it would be slightly more interesting and let me try my best to make it so. Einstein's law of causality does kind of put a damper on the idea that you could step in a machine and just go back due to, in simple terms, cause and effect. Everything happens causing something else and something else to happen and we can't upset that. Now don't give up your dreams just yet. some physicist do theorize that if we could push past light speed time could flow backwards.
Well there it is in a few minutes, time travel. Now to fully understand the science and theory behind it you would need to read a book and be much smarter than me. It is something very cool to think about. Stephen Hawking as talked about the idea of time traveling tourist if you want to look into that. But to save you the time. But if someone knocks on your door claiming to be your great-great-great-great-great-great-great-great-great-great-great-great-great-great-great grandson, maybe you should listen.
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The Year In Physics
This year was a good year in physics. I learned a lot about a bunch of different subjects. One of my favorite subjects was kinematics because it applies to a lot of different things. Throughout these blogs posts I used a lot of different kinematic references. My personal favorite was the drifting post because not only is drifting awesome, it can apply to so many different things in physics.
The year has been really good though. I really enjoyed all of the labs we did because they were fun and they applied to everything we learned. Good luck to all of next years physics students.
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physics of explosions
Few people are surprised by the fact that an asteroid, the size of Mt. Everest, could do a lot of damage when it hits the Earth. And it is not really surprising that such bodies are out there; every few years, there is a newspaper headline about a "near miss" in which an object misses the Earth by "only a few million miles." But why should an asteroid impact cause an explosion? It was made of rock, not dynamite. And why such a big explosion? But then, what is an explosion, after all?
An explosion occurs when a great deal of energy is "released" into a small volume in a very short period of time. It doesn't matter what the source of the energy is; it could be chemical (stored in food), or kinetic (the result of motion).
However, nuclear bombs are the most devastating of them all and can cause some serious damage in its surroundings The dominant effects of a nuclear weapon (the blast and thermal radiation) are the same physical damage mechanisms as conventional explosives, but the energy produced by a nuclear explosive is millions of times more per gram and the temperatures reached are in the tens of mega kelvins. Nuclear weapons are quite different from regular weapons because of the huge amount of explosive energy they can put out and the different kinds of effects they make, like high temperatures and nuclear radiation.
The devastating impact of the explosion does not stop after the initial blast, as with regular explosives. A cloud of nuclear radiation travels from the epicenter of the explosion, causing an impact to lifeforms even after the heat waves have ceased. The radiation can cause genetic mutation, radiation poisoning, and death. because of this harmful effects, during the cold war people were traumatized to live in a time period where atom bombs seemed to make the power of the country greater and unfortunately it wasnt a success
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Master Assassins
Hello once again audience! Today I'm going to talk about a duo of absolutely awesome government assassins from The Avengers, Black Widow and Hawkeye (also known as Natasha Romanov and Clint Barton). Now you might be thinking, what's so super about these two people? They are just people, no super powers or anything. Well I can tell you that they are in fact super with their accuracy.
Let's start with Hawkeye. Like his name says, his eyes are like a hawk's. But how precise is that?
Precise enough to shoot a flying alien space craft without even looking! Hawkeye's power is this excellent accuracy with his bow and arrow.
Next we'll move on to Black Widow. At first she seems like any other pretty girl. Wrong!
She learned super self defense techniques with, like Hawkeye, excellent accuracy.
Now, many superheroes seem completely unrealistic and could never be alive in real life. But Black Widow and Hawkeye are like real people. The government and other people have assassins just like the S.H.I.E.L.D. agents in Avengers. The CIA, FBI, SWAT, you name it. These super characters aren't as fictional as they seem. Lil' Bretz singing off.
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Complete Electricity and Magnetism Review
Reviews + Quizzes + Exams
[ATTACH=CONFIG]360[/ATTACH]
Link:
https://market.android.com/details?id=air.com.example.EMReview&hl=en
Are you disappointed with your last E/M Review purchase? Was it incomplete and/or misleading by giving the wrong answers? Well look no further, as you have stumbled upon an intuitive and complete review of the physics involved with electricity and magnetism.This app will improve your understanding over Calculus-Based and Fundamentals of PHYSICS: Electricity and Magnetism.Whether you are a college student seeking help throughout the semester or a graduate preparing for a tough exam, this is the app for you.The in-depth review will quickly grab your attention with general principles, important concepts, equations, and real world applications.
After the review, quiz yourself on each topic with many multiple choice questions.
Standardized Scoring coming soon...- 2 - University Exams are available for additional testing - Keys are posted to check your answers.
Final exam coming soon...All Topics Covered:
-Electric Charges and Forces
-The Electric Field
-Gauss's Law
-The Electric Potential
-Potential and Field
-Current and Resistance
-Fundamentals of Circuits - DC circuits
-The Magnetic Field
-Electromagnetic Induction
-Electromagnetic Fields and Waves
-AC Circuits
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Schools Grants & College Scholarships
Finding out ways and means of how you can pursue your higher education with the high costs can be a cause of concern for both parents and students. But with proper research of the variousSchool Grants schemes for financial aid or college grants will give you a solution especially because some of these aids include federal school grants where the students don’t have to pay the aid after graduation and it can be utilized to cover ant expenses while attending college. Federal grants is decided on the financial need of the student taking into account the amount that the family can offer in the section of the Free Application for Federal Student Aid (FAFSA) report; so the student has to be perfectly honest when he fill up the FAFSA application form so that we will be eligible of receiving the federal grants. Once you have been awarded the grant, it is usually deposited in your student account, deposited into your bank or paid by check. The Pell Grant and the Federal Supplement Educational Opportunity Grant (FSEOG) are the two types of Federal Student Grants.
In many colleges they may have funds set apart as student college grants beside the two Federal Student Grants mentioned above. The details of these college grants will be available in the school’s financial aid office which has to be followed up and taken advantage of as early as possible since most of these grants are very limited and gets distributed quickly. Filling up the application for the FAFSA is the first step that needs to be done to avail Federal Student Aid of any kind and over and above this; most schools have their own forms which will have to be filled provided that you qualify for any of the local or private financial aid that is available. Be sure that you know about your family’s financial resources as this information is of prime importance when it comes to deciding your real requirement for financial aid to avail such student grants. All student grants are reserved for students whose families deserve financial aid, it is worth mentioning that if you deserve such grants, it is worth looking into all avenues including student loans and work study
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So Many Forces..
Forces are everywhere and i never knew how many forces act upon a simple object until this unit in class! A force is a push or pull acting upon an object as a result of its coming into contact with another object. For the purpose of this blog post, i will use a basketball rolling down a hill because that is simple, and hey, its getting late.
So the forces acting upon this object are the normal force, applied force and gravity force. The normal force is the force of a surface acting back on the object so in this case it is the ground pushing on the basketball to keep it up. Secondly, the applied force is a force from a person or another object so there would be an applied force if i were to go up to this basketball and push it down the hill. Lastly, gravity force is what pulls the object to the center of the earth. This is equal to the weight of the object because it is found by multiplying mass times 9.81 N/Kg.
There is also friction, which is exerted by the surface when the ball (in this case, basketball) rolls. Air resistance is another force most people don't think to consider, and this force is opposite of which ever direction the ball is rolling. As you can see, there are a lot of different kinds of forces, and i have nobody but mr. fullerton to thank for teaching me all of them!
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Physics of Watching TV
Everyone knows that one of their favorite past times is sitting in front of the television and watching movies, shows, or playing video games. However with this almost motionless, lazy activity comes a great deal of static physics and mechanics.
When you are sitting down enjoying whatever show it is you may be watching, you actually have several forces acting on you concurrently. For example, by sitting on the couch with no extra weight on you, your weight is equivalent to the normal force, or the force of the couch on you. In addition to the force of the couch of you, if you are leaning on an arm or laying down, a similar force acts on you, except at an angle or incline. The general rule for laying on the couch watching television is that whatever force you exert on an object, that object exerts the same force in the opposite direction, or 180 degrees around.
Next time you sit down and watch some television, remember that you are under the rules of static physics!
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Deciding what Angle to use....HELP PLEASE !!
The question is this:
A hiker sets out on a trek heading (N35degreesE) at a place of 5.0 km/h for 48.0 mins. He then heads west at 4.5 km/h for 40.0 min. Finally, he heads (N30degreesW) for 6.0 km, until he reaches a campground 1.5 hours later.
A) Find his total displacement using vector components.
SO, i used Ax = 4.0 cos 35degrees = 3.27
Ay = 4.0 sin 35degrees = 2.29
Then I looked at the answers and it said I should have used the angle 55 degree angle instead of the 35. How do I figure out when to use which angle?
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The Doppler Effect
This week at The Lilac Festival, my mother and I experienced loads of different noises all at the same time. With loads of security, we heard lots of sirens passing us, creating the Doppler Effect. The Doppler Effect is the shift of frequency of a wave when a source moves past.
As a source with sound, such as a police car or security car, moves towards you, the frequency is smaller, which creates more of a high pitched sound. While moving, the frequency then begins to increase and after it passes you, the frequency is larger, making a lower sound.
To the human ear, the frequency increases quickly with the source, so the sound sounds like "neeeowwww." With so much chaos and Doppler Effect at the lilac festival, my mom and I decided to give our ears a break and go home early.
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