Physics Billiards

Physics in pool. When i play this game i think of Newton's laws.
Emil Lopez

Physics zero gravity

Zero gravity from the movie "Enders Game" every one should watch. Has a lot to do with physics and very entertaining.

Physics

Emil Lopez

Zero gravity

Sent from my iPhone

The physics of the Karate Chop

After talking about impulse in class and seeing the experiment we did as a class I began to wonder how is it that a person is able to karate chop a piece of wood. Looking at it from a physics point of view I know that the person would have to be very fast when karate chopping the piece of wood because we know that impulse is a change in momentum and impulse = force times time. In order for the force to be as greatest as possible, the person karate chopping the piece of wood would have to be very quick. This is just looking at the situation form a physics point of view, of course there are other rules and understandings when it comes to karate chopping a piece of wood that only those who practice karate would know. But this just goes to show that physics can be found almost anywhere.

 

Katty Molina

http://www.sfgate.com/technology/businessinsider/article/Famous-Math-Professor-Says-Zuckerberg-s-3-5070096.php

What a way to encourage people in the field of math and physics but is there a problem with the way it selects its winner. its interesting that all 7 winner on Friday were men. Coincidence? I think not.  

Sharda Ramjit

http://blogs.desmoinesregister.com/dmr/index.php/2013/12/16/snow-and-ice-cited-in-nearly-15000-of-damage-on-waukee-roads-last-week/article

Car accidents increase when it snows because when the snow turns to ice there is no friction causing cars to slide on the road regardless of the breaks being applied. The car will continue on (according to newtons first law) until a net force acts upon it. Be careful. 

Sharda Ramjit

http://www.bbc.co.uk/news/science-environment-25349395

Eurpoa, jupiters moon, has a crust made of ice suggesting that life may be possible there.

 Sharda Ramjit

Momentum is a measure of how hard it is to stop something. Something heavy moving at a fast speed has a lot of momentum. For example the truck in the picture above. If there was a car next to it and they were both rolling down the hill, the truck would go faster because it has a larger mass which gives it a greater momentum than the car. If both the car and the truck apply the breaks in order to stop it would be much harder for the truck to come to a stop compare to the car.

Evgenija Momentum

Why are car dashboards padded? 

If the air bags do not deploy (or are not installed in a car), then the driver and passengers run the risk of stopping their momentum by means of a collision with the windshield or the dashboard. If the driver or passenger should hit the dashboard, then the force and time required to stop their momentum is exerted by the dashboard. Padded dashboards providesome give in such a collision and serve to extend the time duration of the impact, thus minimizing the effect of the force. This same principle of padding a potential impact area can be observed in gymnasiums (underneath the basketball hoops), in pole-vaulting pits, in baseball gloves and goalie mitts, on the fist of a boxer, inside the helmet of a football player, and on gymnastic mats.

Evgenija 

The impulse - momentum change theorem

One example is the use of air bags in automobiles. Air bags are used in automobiles because they are able to minimize the effect of the force on an object involved in a collision. Air bags accomplish this by extending the time required to stop the momentum of the driver and passenger.

Evgenija

DIVING

http://www.youtube.com/watch?v=4uHkyMh9FW4

This video shows the tallest dive in world record history. In terms of energy, when the diver is at the top it is gravitational energy (Eg=mgh) which is energy that can be released from gravity then it is converted to kinetic energy which is energy of motion (Ek=1/2mv2).

CAR CRASH

http://www.youtube.com/watch?v=NCelD0qr8Do

The following video demonstrates a large pickup truck and a small vehicle colliding. After the crash it is apparent that the small car sustained more damaged than the Ford so it easy to say that the Ford had more force and power which caused the damage. Yet through Newton's Third Law it explains that the same amount of force is exerted. Also in terms of momentum through the equation pi=pf, energy is conserved and transferred but never loses its energy.

MMA AND PHYSICS

http://www.youtube.com/watch?v=LWE79K2Ii-s

The following link shows the Top 20 knockouts in UFC history. UFC is a form of boxing that includes muy thai, jiu jitsu, and kickboxing. It all involves energy, momentum, and work which inevatibly creates the fatal blow giving a knockout to the victim. Before the fighter punches the opposer, he has potential energy then it turns to kinetic energy as he begins to swing. A strong kinetic energy is what causes many opponents to lose their balance and fall. Momentum is also used in every punch. The equation of momentum is mass x velocity, so the mass of the fighter and velocity at which the punch is being thrown will determine how much damage the other fighter will receive.

http://www.youtube.com/watch?v=G79frInQcTw

In this video, we see centripetal force applied. When spinning a cup of water, the water doesn't fall from the cup as its spanned. This is due to centripetal force. When traveling in the circle, the cup was being pulled towards the center, going inward. The tension of the string keeps it from going out.

-Miguel Vazquez

http://www.youtube.com/watch?v=n7ICjWJivec

In this video, we see Newton's 1st law anything in motion stays in motion until a force acts on it. Here we see what might happen in a car accident if a child doesnt wear a seat. Even thought the car stop, the cild is still moving at the velocity the car had. The child kept moving until eventually, the child stop on the dashboard.

-Miguel Vazquez

Shahbaz [Blog#6] Jay Walk || Egg Experiment

For my last blog, I'd like to share my footage from the Egg v/s Sheet Experiment we did at the Jay Walk. 

For the shell of the egg to break requires a high impulse, or instantaneous force. With the wall, all the force to stop the egg occurs almost at the same time, so the impulse is very high, breaking the egg, as we saw during the "accident". 

With the sheet however, the force to stop the egg is applied over a much greater period of time. Therefore, the force is lower at each instant of the collision, meaning a vastly reduced impulse. Since the impulse is much less than what is required to break the shell, the egg does not break.

PLEASE USE THIS ONE

> http://www.youtube.com/watch?v=ELeNu5tnaNU
>
> -In this video, basketball players are practicing momentum skills by throwing the ball as hard as they can to the other person. Notice how some players have difficulty controlling the ball when it hits them. Others have to keep the ball in motion so they bounce it to control it. Notice how it is to stop the ball. This is what momentum is about
>
> -Miguel Vazquez

http://www.youtube.com/watch?v=3sZrrZ988Pg

-In this video, we see a swimmer pushing off a wall to get start in lap swimmer. Here we can see forces applied. The swimmer applies a force on the wall to push off, but then the wall applies a force on the swimmer . These combined forces is what actually causes the swimmer to move in the water.

- Miguel Vazquez

Shahbaz [Blog#5] Momentum

http://youtu.be/ueafSvK9T-M

Here, we see a Smart Car and a Mercedes E-Class in a head-on collision. Before I even saw the whole video, I was predicting how the crash would end up, based on our findings in class. Lo and behold, as expected, the two collided and stuck together. Although both cars applied equal force, the Smart Car being lighter got pushed back, opposite of its original direction.

#ConservationOfMomentum 

http://www.youtube.com/watch?v=ELeNu5tnaNU

-In this video, basketball players are practicing momentum skills by throwing the ball as hard as they can to the other person. Notice how some players have difficulty controlling the ball when it hits them. Others have to keep the ball in motion so they bounce it to control it.

-Miguel Vazquez

http://www.youtube.com/watch?v=SLBdnpoKa3Y

Here's an example of conservation of energy. Two men, jumping up and down on a seesaw. As man jumps he gains gravitational energy. As he goes down, the gravitational energy turns into kinetic energy and launches the other man up.

-Miguel Vazquez

saw apollo 13 for the first time the other day, the story was 

about three astronauts who's shuttle in space breaks down 

and their journey to make it back home in one piece. the link

between physics and this was when in the space station everyone

was tying to figure out how to get the shuttle back to earth but at

the correct velocity and how certain forces would force a different direction 

for the shuttle

Daniel Cabezas

Blog 3/6

saw apollo 13 for the first time the other day, the story was 

about three astronauts who's shuttle in space breaks down 

and their journey to make it back home in one piece. the link

between physics and this was when in the space station everyone

was tying to figure out how to get the shuttle back to earth but at

the correct velocity and how certain forces would force a different direction 

for the shuttle

Nicole sangen final blog

since this is the last blog for the class I am going to show a montage of clips sorry Edward I saw you posted something about widely coyote the first two clips are form the television show showing energy dispersion we learned in class. 
http://www.youtube.com/watch?v=Jnj8mc04r9E&list=PL02964CDB79C691E9
http://www.youtube.com/watch?v=Hd755bbc8uw
This is the graviton ride that was mentioned in class
http://www.youtube.com/watch?v=dBaQRcairPM
 Here is a clip of the old jump rescue system fire fighters used
http://www.youtube.com/watch?v=-7C4zIHDT9k
This shows the use of fire escape systems which shows how tension is in the ropes and the energy is dispersed.
http://www.youtube.com/watch?v=rqlNify7-N4
these last two clips sorry couldn't resist
http://www.youtube.com/watch?v=3CLbKchHtcM
http://www.youtube.com/watch?v=lqSmzGj_sQc

Blog 2/5

After learning so much physics its interesting to think about things

such as roller coasters and how much physics is being applied

during these rides. varies from acceleration to velocity. A roller coaster is a 

perfect example for explaining these physics.

Daniel Cabezas

Blog 1

was watching these strongest man competitions a couple of months ago

but would have never cared to figure how much physics is being involved

and how the weight and the mean have an equal momentum. 

Daniel Cabezas

The gravitron

https://www.youtube.com/watch?v=A0H7TYzcMaY&feature=youtube_gdata_player

I thought this was a good video that shows what happens inside a gravitron. This gravitron is a little bit different than the one we learned in class but it still does the same thing. Once it starts moving it feels like you are stuck on the wall. You feel a force pushing you back as you try to get up. Its a fun ride, I definitely suggest for you guys to try it once.

centripetal force review

https://www.youtube.com/watch?v=LsrWeeX4src&feature=youtube_gdata_player

This is a good review about centripetal force. It shows us which way gravity and tension points towards in a circle. The second part of the video shows how to solve for tension, but the equation that was used was different than the one we learn.

what is the universe?

http://rt.com/news/space-evidence-universe-hologram-195/

This is something that I have seen around the internet for a couple of days. The article is stating that the universe is a giant hologram. This shows that new things are being learned everyday. As time goes on technology increases and more things are developed. We also learn that what we may know about something may not be true. Lets see what else is going to be discover.

Centripetal Force

We all know by now what centripetal force is but to refresh our minds before the big day I feel like I have to enforce this topic since I've received questions about it. First of all we all SHOULD know that the default pathway that every object takes is straight unless there's an outside force that disrupts that pathway. And second that even when an object during circular motion is at constant speed it would still be accelerating. In the picture above when the car is doing a turn, acceleration is pointing towards the center but if it was to like loose control or not have a driver to touch the steering wheel to make that turn the car will just go straight up out of the street turn pathway.

Newton's Third(3rd) Law-- How do you know?

It is no brainer that time and time again we've had example after example of newton's third law that we preferably see this example of it taking place when using weights. Just to refresh what it really illustrating here in terms of physics-- there are two forces present in the picture above that act in pairs which is the force of the bar on the weightlifter and the force of the weightlifter on the bar if you can write it like that then they are 3rd law pairs which is how you know that this is the case.

Trick guy's can do but girls can.

1. Stand three feet away from a wall
2. Bend over and put your head against the wall
3. Now try to stand up while lifting a chair.

If you're a woman, you should be able to do it successfully, but if you're a man, you won't be able get back up into a standing position while holding the chair that's in part because the guy's center of mass is greater on their upper body and the girls' center of mass is more towards the hips .

http://www.youtube.com/watch?v=r8E5dUnLmh4

In this myth-busters video, they assessed newtons 3rd law - That is, every action has an equal and opposite reaction. We can see this as the two cars crashed and were equidistant from each other when they crashed 

--

Edward Bonfiglio

As we know we all fall down at 9.8 meter per second (the force of gravity), according to the cartoon network the force of gravity does not work unless we look down - Seems plausible.

-Edward

--

Edward Bonfiglio

This meme was quite funny. The higher you are the more gravitational potential energy you have, in this case i'm pretty sure this guy has decent amount of potential energy 

-Edward 

--

Edward Bonfiglio

Blog Post #6

Last week, Matt Prater of the Denver Broncos made the longest field goal in NFL history. The kick went 70 yards. He needed to apply a force that was great enough to get it to travel 70 yards downfield. While the ball was in the air, there was also the force of gravity and the force of the air acting upon the ball. This will always slow the ball down, decreasing the distance it will travel. This is why Prater's kick was so amazing. 

http://www.youtube.com/watch?v=2H6dHWxALqE

-Matthew Zazzarino

Blog Post #5

A few weeks ago our class was introduced to Newton's Cradle. It is a device that is used to demonstrate how the conservation of momentum and energy with swinging spheres. The device in class was a very small model. It would be interesting to how well the momentum and energy is conversed in a much more massive device. 

http://www.youtube.com/watch?v=OuA-znVMY3I

-Matthew Zazzarino

Blog Post #4

A few weeks ago in the Alabama vs Mississippi State football game, Brandon Holloway hobbled off the field after Christian Jones ran him over on a kick-off return. Both players were running at similar speeds, however Jones weighs about 25 pounds heavier than Holloway. The force of Jones which combines his weight and speed when colliding with Holloway's applied force including weight and speed, favors Jones. This would mean that Jones would push Holloway back because he is applying a greater force. 

http://www.youtube.com/watch?v=DfHIhO_UgQw

-Matthew Zazzarino

Netwon' 3rd Law in Boxing

Ever watch a boxing match and wonder why they wear the large gloves? According to the Newton's 3rd law of motion, every action has an equal and opposite reaction. When a boxer throws a punch and connects, the fighter who gets punched, as you can see in the video, gets knock out. The boxer who threw the punch, however, is fine. The gloves he's wearing still transfer a lot of the original force from the punch to the other fighter but the when the force is transferred back to the boxer's hand, the cushion of the glove dampens it greatly. The presence of gloves in a boxing match means that Newton's 3rd law of motion exists and that it's strong enough that fighters must protect themselves from their own punches.

http://www.youtube.com/watch?v=EdGcKjTnQB8

- Cawley, Nicholas J.

The internal and external ballistics of a round fired from a firearm are prime examples of the physical application of the lessons we've learned in class. Force, momentum, and energy; a cooper jacketed projectile flying through the atmosphere at 990m/s exhibits all such properties. Below is a link to a video briefly re-enacting an incredibly difficult shot made famous by a Marine known as GySgt. Hathcock.

http://www.youtube.com/watch?v=9As6AMGifSY

- Cawley, Nicholas J.

Info on the Higgs Boson 'God' Particle

Details on the information og therecent discovery on the Higgs Boson particle.

http://www.youtube.com/watch?v=uCMuInLYVr4

- Cawley, Nicholas J.

Force Behind a Meteorite

The Tunguska event is an episode of a very fast moving meteorite that crashed into a Northern part of what is now Russia. The force due to impact is estimated between 3-30 Megatons of TNT. That's a greater force than the atomic bombs dropped on Hiroshima and Nagasaki, Japan combined. Most meteorites that strike Earth are not very large. The ones that caused titanic craters in the crust of the Earth were moving astronomically fast. Below is a brief description...

http://www.youtube.com/watch?v=2F3rbCnufdY

- Cawley, Nicholas J.

W=Fd. Not the Truth When Running Versus Walking

In physics we measure energy with Joules(J). Calories are likewise a measurement of energy but they are not as precise as the Joule and have thus been superseded by the Joule in the International System of Units. However, nutritional data still uses the calorie for energy measurement of food. According to the formula for Work, W=Fd. Theoretically this means that if I were to run 100m and walk 100m, I would use the same amount of energy to accomplish both tasks. In reality, the work formula isn't as accurate as a 2-D equation. Our bodies actually burn more energy while running. The video below briefly explains why.

 http://www.youtube.com/watch?v=JBB3Htz-Mb8

- Cawley, Nicholas J.

Conservation of Momentum

http://www.youtube.com/watch?v=as4XP4Mu6-k

The video above is a roller coaster than moves continuously fast without a constant propulsion. Once the roller coaster enters its first big 'drop', the roller coaster continues moving due to the conservation of momentum.

- Cawley, Nicholas J.

Shahbaz [Blog#4] Centripetal Force

This right here, is a typical attraction at many circuses and town fairs throughout the Indian Subcontinent (Pakistan, India and Bangladesh). Here, we see a make-shift arena built out of wood, upon which a small sedan is made to run carrying two individuals.

Physics can definitely be seen at play, with "Centripetal Force" being the answer to the question- What keeps the car from falling down from the apparently vertical walls.

As we all know, Centripetal Force, is defined as a force which keeps a body moving with a uniform speed along a circular path and is directed along the radius towards the centre. 

Although this stunt has gained much popularity in South-Asia, it actually has its origins in the United States, at our very own Coney Island, to be exact. 

http://youtu.be/wIv2nvhUO7U

Ignorance is Bliss

Last sunday morning started out just as any other Sunday morning. I made myself coffee and read the New York Times. In an article about deceased family members, a reference about the movie Casper "The Friendly Ghost" and how he would go threw walls. The author continues to say how "in the future perhaps we would also be able to go through walls". The whole idea that we could go through walls in the future and how it is completely impossible, that is what this blog will be about. At no point ever in the entirety of space-time will a human be able to go thew a wall. In class we learned about forces and what happens when you apply a force. When a person walks into a wall, both the person and the wall is providing a force. This force is equal, going threw a wall would be breaking the laws of physics. Something that is impossible within this universe. Knowing this information it has made me lose respect for the author and by extent, "The New York Times" itself, although I am correct, over thinking things can ruin the original tone of the story leading me to understand the term, "ignorance is bliss". 

- Alexander Gallo 

By Katherine

This video shows techniques on how to pass the basketball around the court to each player. The law of conservation of momentum can be demonstrated when passing the ball. When you pass the basketball, the basketball to you is the system; its not isolated. There is a net external force on the system to keep you from moving backwards that changes the momentum of the system. If the ball to you system is isolated (let's say you are standing on frictionless ice) then you do move backwards when passing the ball. In this case, law of conservation of momentum does not apply because the system is not isolated. However, you can include the floor, building, earth in the system for the system to be isolated, then momentum of the system is conserved.

http://www.youtube.com/watch?v=QIxrXFHfGMc

stephanie pena sent you a video: "Physics Activity: Making a Free Fall Flicker"

stephanie pena has shared a video with you on YouTube A great example of Free Fall Stephanie Pena Physics Activity: Making a Free Fall Flicker by Peter Bohacek Which will land first, a ball released and allowed to drop downwards, or an identical ball tossed sideways from the same height at exactly the same time? Here's a quick experiment to answer that questions. Help center • Email options • Report spam ©2013 YouTube, LLC 901 Cherry Ave, San Bruno, CA 94066

"The faster you move, the heavier you get!".

Avery interesting fact  I read on the web says 

If you run really fast, you gain weight. Not permanently, or it would make a mockery of diet and exercise plans, but momentarily, and only a tiny amount. Light speed is the speed limit of the universe. So if something is travelling close to the speed of light, and you give it a push, it can't go very much faster. But you've given it extra energy, and that energy has to go somewhere. Where it goes is mass. According to relativity, mass and energy are equivalent. So the more energy you put in, the greater the mass becomes. This is negligible at human speeds Usain Bolt is not noticeably heavier when running than when still  but once you reach an appreciable fraction of the speed of light, your mass starts to increase rapidly.

Stephanie Pena

This image is a perfect example of friction.

Static shocks are as mysterious as they are unpleasant. What we know is this: They occur when an excess of either positive or negative charge builds up on the surface of your body, discharging when you touch something and leaving you neutralized. Alternatively, they can occur when static electricity builds up on something else a doorknob, say which you then touch. In that case, you are the excess charge's exit route.

But why all the buildup? It's unclear. The common (and probably partly correct) explanation says that when two objects rub together, friction the electrones off the atoms in one of the objects, and these then move onto the second, leaving the first object with an excess of positively charged atoms and giving the second an excess of negative electrons. Both objects (your hair and a wool hat, say) will then be statically charged. 

Stephanie Pena

By Katherine Gallego

This video depicts a Ferris Wheel demonstrating Centripetal Force.

When a person is on this ride, the riders feeling "heavier" or "lighter" depending on their position on the Ferris wheel.

The Ferris wheel consists of an upright wheel with passenger seats attached to the rim. These seats can freely pivot at the support where they are connected to the Ferris wheel. As a result, seats always hang downwards at all times as the Ferris wheel spins.

http://www.youtube.com/watch?v=plKIn1Qg3Mk

By Katherine Gallego

http://www.youtube.com/watch?v=Z8RRkMsHOMU

Found this clip very interesting, demonstrating free fall.

May The Force Be With You 

(AND STOP BRAKING THE LAW!!!!)

The universe is overall understandable in the laws and rules that it has set. In class we learn how forces can only work if the they are touching, given a few exemptions such as gravity and magnetic force. The overall fact of the matter is that you can not move an object without physically touching it. Moving something without touching it is impossible it can't be done in a million years it will never happen ever! Yet watching the star wars movies we see Luke and the other Jedi brake this law with a snap of their fingers. Not only are we forgetting how extremely impossible this is, but the fact that the movies make it look like it's no big deal is why star wars physics is a lie. At the same time, the way a police officer must be above the law to protect the law, does a Jedi need to be above the laws of physics in order to protect the peace. Perhaps those who are protecting the peace should set an example and stop braking the laws of physics, perhaps then we wouldn't have so many dark Sith Lords rising up against the Jedi way that they were raised by and constantly doing evil. In the star wars universe all evil comes back to a "bad Jedi", bringing up the question, if all races can live in peace without the evil Jedis? perhaps they should get rid of Jedi's all together and no one will be their to protect and at the same time harm the rest of the Universe. The problem can't be at the same time the solution. Going back to our Universe after that long tangent we know that laws in the Universe can not be broken. In order to apply a force they must be touching, given the exemptions of the previously staten forms of force. 

- Alex Gallo     

The 1K Perfect Sphere

The 1K Perfect Sphere 

Durring my semester in Physics I've had to use different forms of measurement, the kilogram in particular. After doing some research on what exactly was a kilogram, I have found out that use to be based off of a physical object. After some time, a problem was discovered with the object. The mass of the object would slightly change over time. It is still not clear why this happens, as a solution scientist have found a way to fix the problem and no longer be dependent on a physical object. To begin they have created a perfect sphere out of silicon that weights exactly 1 kilogram and has a monetary value of around one million euros. What scientist will do with this object is calculate the number of atoms in the object. 1K= Number of atoms that is in 12g of c-12. By knowing the number of atoms we will be able to define exactly what is a kilogram. Hopefully in the near future we will no longer rely on physical objects to define out weight in the world. 

- Alex Gallo 

James II Newton's 'Principia' brings $2.5m to Christie's auction.

A stunning first edition copy of Isaac Newton's "Naturalis Principia" that was specially bound and presented to King James II has sold at Christie's December 6 Fine Printed Books & Manuscripts Including Americana auction in New York.

The exquisitely bound book was valued at $400,000-600,000, but made a superb 320.0% increase on estimate to sell for $2.5m - a price that Paul Fraser Collectibles believes to be a record for the work. One of the most important books in the history of science, it was boosted by its royal provenance.

It is in the "Principia" (full title Philosophiae naturalis principia mathematica), that physicist Isaac Newton first published his universally-acclaimed Law of Gravity in 1687.

(http://www.paulfrasercollectibles.com)

Oleg Kobec

Centrepetal Force!

Centrepetal Acceleration doesnt have to do with any mass,

however centrepetal force depends on the how heavy the object is stringed!

longer the rope, heavier the object will spin faster!

-Won Song-

P.s. Kingdaka blog is mine too =) this is my third one!

KingdaKa from Six Flags!

Once the ride goes up in the highest position, it will give us the gravitational Energy and it will coverts to Kinetic Energy as soon as it starts going down! How much of energy will exert from this roller coaster? interesting..

Sent from Windows Mail

Pool!

i found a very cool picture that shows the momentum!

when whiteball hits the group of balls, instead of the ball that hit by the white once, the other side of the balls are bouncing off!

-Won Song-

Sent from Windows Mail

Centripetal Force In The Big Bang Theory

As I'm watching The Big Bang Theory on TV, Penny and Leonard are on a date.  In this video, Leonard demonstrates Centripetal Force

http://www.youtube.com/watch?v=X2mtao0deTk

Preston Lee

The Golden Rule of Mechanics

    I've knew about this rule since studying physics in school. Strangely, I could not find this term in English Wikipedia. In there it refers to Fermi's golden rule in quantum physics and Rohen's golden rule in nuclear physics only.  The "golden rule" of mechanics states that whatever you lose in power, you gain in displacement (or gain in power - loose in displacement). It is a simple version of the law of conservation of energy.
    When we use pulleys and ramps to lift things which otherwise would be too heavy. A smaller force achieves the necessary work, but over a greater distance.
Oleg Kobec

Coffee

Coffee is something that I cannot live without, whenever I need a quick boost of energy a cup of coffee usually does the trick. But it seems that whenever I serve myself a cup I cant seem to do so without spilling some as I walk with it.  Well apparently the frequency in which we walk in happens to be the same rate as the natural oscillations of the coffee itself. This causes people to spill some of their coffee as they walk since we are moving at the same rate as the coffee. Apparently one way to avoid this is by choosing the right size of the mug and also by focusing on your cup of coffee as you walk, instead of focusing on your movement.

 

Katty Molina

Bikeride

Because of the wonderful weather we were having the other week I decided to go out on a bike ride with a couple of friends. We came upon a race track and  decided to have a competition. As I saw the competition I noticed something; everyone's body was shifted towards the center of the track as they raced. I know now that this is due to centripetal force. In order for the bike riders to stay on the circular race track there would have to be an inward directed force to allow them to move in a circle.

 

 

 Katty Molina

Re: Super Man Debate

I was watching an old episode of the Big Bang Theory, when Leonard, Sheldon, Howard, Penny,and Rajesh starts to debate on how fast super man can fly to catch Lois Lane.   I found how humorous this debate was when they mentioned factors of Physics such as how fast Superman is flying (Velocity) and decelerates to catch Lois.

http://www.youtube.com/watch?v=BeheaUjXWpM

-Preston Lee 

On Mon, Dec 2, 2013 at 10:17 PM, Preston Lee <lee.preston17@gmail.com> wrote:

I was watching an old episode of the Big Bang Theory, when Leonard, Sheldon, Howard, Penny,and Rajesh starts to debate on how fast super man can fly to catch Lois Lane.   I found how humorous this debate was when they mentioned factors of Physics such as how fast Superman is flying (Velocity) and decelerates to catch Lois.

http://www.youtube.com/watch?v=BeheaUjXWpM

Super Man Debate

I was watching an old episode of the Big Bang Theory, when Leonard, Sheldon, Howard, Penny,and Rajesh starts to debate on how fast super man can fly to catch Lois Lane.   I found how humorous this debate was when they mentioned factors of Physics such as how fast Superman is flying (Velocity) and decelerates to catch Lois.

http://www.youtube.com/watch?v=BeheaUjXWpM

Domino's and Physics

While I was procrastinating on YouTube earlier today, I watched a video that my friend shared on Facebook which shows cool domino tricks.  As I was watching this video, I've realized how much Kinetic and Gravitational Energy is applied in this video! 

http://www.youtube.com/watch?v=ARM42-eorzE&feature=youtu.be

Preston Lee

Nicole Sangen
Fire department physics
Ever since I started my various fire science and physics classes I have noticed in the fire service there is on going physics.
In this clip there is a lot of forces acting on the fire fighter gravity, weight, friction, and opposite forces acting on the fire fighter.
http://www.youtube.com/watch?v=NNN6zQdf6ZY
 
 

Weightless man.

 H.D. Wells, one of my favorite childhood writers,  tells a story in which a very fat man wanted to
rid himself of his fatness. The person who tells the story was the possessor of
the recipe of a miraculous brew which could rid people of excessive weight. The
fat man made the brew according to the recipe and drank it. Obviously, this man
didn't know what the weight and mass were (Weight watchers? Mass watchers?). And this is what happened.
 "For a long time
the door didn't open.
 "I heard the key
turn. Then Pyecraft's voice said, 'Come in.'
 "I turned the
handle and opened the door. Naturally I expected to see Pyecraft.
 "Well, you know,
he wasn't there!
 "I never had
such a shock in my life. There was his sitting-room in a state of untidy
disorder, plates and dishes among the books and writing things, and several
chairs overturned, but Pyecraft—
 "'It's all
right, o'man; shut the door," he said, and then I discovered him.
 "There he was
right up close to the cornice in the corner by the door, as though someone had
glued him to the ceiling. His face was anxious and angry. He panted and
gesticulated. 'Shut the door/ he said. 'If that woman gets hold of it—'
 "I shut the
door, and went and stood away from him and stared.
 "'If anything
gives way and you tumble down, I said, 'you'll break your neck, Pyecraft.'
 "'I wish I
could/ he wheezed.
 "'A man of your
age and weight getting up to kiddish gymnastics—'
 "'Don't,' he
said, and looked agonized.
 "Til tell you,'
he said, and gesticulated.
 "'How the
deuce,' said I, 'are you holding on up there?'
 "And then abruptly
I realized that he was not holding on at all, that he was floating up
there—just as a gas-filled bladder might have floated in the same position. He
began a struggle to thrust himself away from the ceiling and to clamber down
the wall to me. 'It's that prescription,' he panted, as he did so. 'Your
great-gran—'
 "He took hold of
a framed engraving rather carelessly as he spoke and it gave way, and he flew
back to the ceiling again, while the picture smashed on the sofa. Bump he went
against the ceiling, and I knew then why he was all over white on the more
salient curves and angles of his person. He tried again more carefully, coming
down by way of the mantel.
 "It was really a
most extraordinary spectacle, that great, fat, apoplectic-looking man upside
down and trying to get from the ceiling to the floor. 'That prescription,' he
said. 'Too successful.'
 "'How?'
 "'Loss of
weight—almost complete.'
 "And then, of
course, I understood.
 "'By Jove,
Pyecraft,' said I, 'what you wanted was a cure for fatnessl But you always
called it weight. You would call it weight.'  Somehow I was extremely delighted. I
quite liked Pyecraft for the time. 'Let me help you!' I said, and took his hand
and pulled him down. He kicked about, trying to get foothold somewhere. It was
very like holding a flag on a windy day.

Oleg Kobec

Thor and Physics

Over the weekend, I decided to go out and watch Thor. It was a phenomenal movie! After doing some research, I realized that Thor's "magical" hammer defies, or goes against, the laws of Physics. The following video provides a clear demonstration as to how this hammer works against the fundamental ideas of Isaac Newton. Instead of having force dictate where the hammer will end up, Thor uses magic to control its trajectory.

I hope you all enjoy this clip and see the relationship with Physics.

 

http://www.wired.com/underwire/2013/11/the-implausibility-of-thors-physics-defying-hammer-mjolnir/

 

Nathaniel Arabov

Forces

As I was on my morning commute, I came across a rather interesting article. Two planes containing skydivers collided and caused massive destruction. Luckily, all 9 skydivers survived. The force of the collision really dictated the end result. It is interesting to note that the group plummeted 12,000 feet to earth. It is definitely worth the read! It's really amazing when you start to see how forces come up in everyday life. 

http://nypost.com/2013/11/05/incredible-video-captured-from-miraculous-skydiver-crash/

Nathaniel Arabov

How can we find out whether an egg is boiled or not, without breaking the shell?

    Newton's first law gives us the answer. The whole trick is that a boiled egg spins differently than a raw one. Take the egg, place it on a flat plate and twirl it. A cooked egg, especially a hard-boiled one, will revolve much faster and longer than a raw one; as a matter of fact, it is hard even to make the raw egg turn. A hard-boiled egg spins so ,quickly that it takes on the hazy form of a flat white ellipsoid. If flicked sharply enough, it may even rise up to stand on its narrow end.

     The explanation lies in the fact that while a hard-boiled egg revolves as one whole, a raw egg doesn't; the latter's liquid contents do not have the motion of rotation imparted at once and so act as a brake, retarding by force of inertia the spinning of the solid shell. Then boiled and raw eggs stop spinning differently. When you touch a twirling boiled egg with a finger, it stops at once. But a raw egg will resume spinning for a while after you take your finger away. Again the force of inertia is responsible. The liquid contents of the raw egg still continue moving after the solid shell is brought to a state of rest. Meanwhile the contents of the boiled egg stop spinning together with the outer shell.

Oleg Kobec