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crazycrochet20

Luge

I have never heard of the word "luge" until today when looking at events in the Winter Olympics. Luge is a sport where there is a rider on a sled that is sliding down ice feet first. The objective is to get down the track in the fastest amount of time. They often look like this while racing...

Image result for luge olympics

The rider has to fight air resistance to get down the track as fast as possible. They start at the top of an ramp and then have to go around turns until they reach the finish line. Although this may not seem like a dangerous sport, riders can reach speeds of 95 mph or more. In the 2010 Winter Olympics, rider Nodar Kumaritashvili died in a practice run hours before the opening ceremony. Because of his high speed, he flew off his sled into the air and hit a metal pole. Due to his death, track designers for the 2014 Winter Olympics designed a track that went uphill in some areas which would force riders into slower speeds. 

 

Riders rely on gravity and proper turn times to reach the finish line the fastest.

Until next time,

RK

crazycrochet20

So, most of us in Physics C have reached a point where we start to think about college and how this class is going to help us in the future. From what I have heard, most of us in this class plan on going into something that relates to physics in some way whether it be engineering or just a normal physics major. In the classroom, there is a poster that has the 10-Best Paying Majors on it which sparked my idea for this post. 

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In other math and science classrooms you can see posters like this one that try to keep people involved in these classes. STEM classes have components that are in the top paying jobs overall. More recent information says that the order of top paying jobs include a lot of engineering which includes a lot of physics.

10. Geological and geophysical engineering

9. Computer engineering

8. Mechanical engineering

7. Aerospace engineering

6. Electrical engineering

5. Chemical engineering

4. Mining and mineral engineering

3. Metallurgical engineering

2. Pharmaceutical sciences and administration

1. Petroleum engineering

As I think about how hard this class has become, I realize that it will somehow help me in the future even if it just for the challenge of it.

Until next time,

RK

crazycrochet20

These past few weeks have been some of the hardest weeks in high school. College applications were due during this quarter and once those were in, there was a sudden loss of motivation to do anything at school. In every class, I have noticed that I simply try and if I do not understand, I leave it and pray that it will not be important to know for the future. Sadly, this method has proved to be extremely unsuccessful. Midterm week has proved to me that I need to refocus myself for the rest of this school year or my grades will continue to plummet all around. I have self diagnosed myself with "Senioritis" which is curable with hard work and effort. I need to majorly fix my time management for the next semester and hopefully that will help me as well!

Now on to studying for the rest of this week and praying that I can get a good grade on at least 2 of my next exams! Third quarter here I come!

Until next time,

RK

crazycrochet20

At Boston University, the College of Arts and Sciences offers a class called Physics of Food/Cooking. This class combines learning physics with cooking which every person, even those who do not enjoy science, will fall in love with. The professor, Rama Bansil, teaches her students about the basic principles of thermodynamics, molecular physics with a little bit of molecular biology as well. She uses her cooking techniques with science to create treats and relate them to the curriculum.

A perfect example of the idea of physics in food is presented in the video above with a coconut ice cream shell. They use liquid nitrogen to quickly freeze and eliminate the ice crystals that would form with a slow freeze. In doing that, they end up with a creamy coconut ice cream shell!

I really want to take a class like this in college!

Until next time,

RK

crazycrochet20

Most people think of bowling and think about how much fun they have with their friends and family. For me, I think of bowling for a team with a focus on hitting every pin down for a clean game. Clean games equal good scores and good scores equal a happy Rachel. (Clean games are games with all strikes and spares) For the past 6 years now, I have bowled for the school and on weekends, I participated in a league to improve. Every season has its ups and downs and currently, I am in a hole that I cannot seem to get myself out of:(. Consistency is a huge key in bowling and if you do not hit your target on the lanes consistently, everything can go downhill. The game of bowling is also about choices. "Do I use this ball and stand at the center dot and hit the second arrow or do I throw this ball and stand 4 boards to the left of the center dot and hit two boards to the left of the second arrow?" A lot of factors impact your bowling but, one thing will always remain the same: physics. Every lane, no matter which oil pattern, has Newton's Laws all over it. The force that is equal to the mass times the acceleration shown through a grown man throwing a ball that can knock down the pins with a stronger force compared to a six pound ball that is thrown by a little girl.

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When the darn 10-pin in the corner does not fall down (the worst pin on the planet), the second law is acting on it because there is no outside force meaning that it will stay at rest. Finally, the third law is shown when you life the ball from the return, you are putting a force on the ball and the ball is putting a force on you. Same with the approach that you walk on, you put a force on the ground and the ground puts a force on you.

Well that is all for now...

Until next time,

RK

crazycrochet20

At the beginning of this past unit starting electricity, we learned about Gauss's Law and how it was going to be the start of a lot of work in the future with it. I, as do many, need to spend some more time and focus on getting this figured out soon because I have a strong feeling that this will be something I struggle with for the rest of the year if I do not understand some of it soon!

Although this idea was named after Gauss, Joseph-Louis Lagrange started work on this law 40 years prior to Gauss. They both put contributions towards Gauss's Law which relates the distribution of electric charge to the resulting electric field. Now, this post is really going to be about the man that created the law, Carl Friedrich Gauss. Gauss was a German mathematician who huge contributions in many areas including algebra, geophysics, mechanics, electrostatics, magnetic fields and optics. Gauss was a child prodigy when it came to math and science. Growing up, he was a perfectionist and a hard worker who devoted his life to mathematics. He had two wives and six children who, in the course of his life, all died except for one of his children. Due to these tragedies, Gauss lived a depressed and miserable life until he died at 77 in 1855. 

Gauss's work paved the way for a whole new understanding in the field of electricity and magnetism which now allows us high school physics students to somewhat understand some electricity in physics! I do not understand it now, but I am now determined to learn and focus on this!

Until next time,

RK

crazycrochet20

After my thoughts of flying in the last blog post, I got thinking about the idea of levitation. I started looking into this idea and it actually came up that there is currently a group at the University of Bristol in England that is trying to use sound to levitate objects off of the ground. This idea was first brought up by a Russian physicist, Andrei Geim, who counteracted the gravity on Earth to float a small frog. Physicists are now working to increase the size of what they can levitate to humans and then maybe even cars! They have determined that if they are to place an object at a certain point within a sound wave, the force of gravity and the force of the sound wave will cancel each other out and leave the object floating. The "mini tornado" sound waves work in such a way that it counteracts the gravity it normally feels. Although this has only been tested on very small objects so far, hopefully it will progress to larger items and even humans soon.

This is probably the best thing that I have seen all day and maybe we will see more progress with this and find people levitating in the near future! :D

Until next time, 

RK

crazycrochet20

Last night, my sister brought up the sequel to The Incredibles  which got me thinking about another topic for a blog post.

The movie has a lot of physics examples in it; however, there are several examples of where some laws of physics are broken. Each family member has a superpower that makes them unique but they break laws of physics that could not actually be broken in real life. Mr. Incredible has super strength which allows him to pick up cars and stop trains. When he stops the train from falling off of the broken track, he has to put a force on the train equal to the force it is traveling at in order to stop it from falling off. Although this part of it is true, I think that everyone knows that a human could not simply stop a train in the way the Mr. Incredible did in the movie. Next is Dash, the son that can run at extreme speeds which allows him to get away with putting tacks on the teacher's chair without him noticing. In his time to shine, Dash managed to run so fast that he ran across the water. If he were running this fast, why would he have to worry about getting shot at by the bad guys because their machines should not have been able to move as fast as he did. Again, I think we all know that no human can actually run across water like Dash did in the movie.

This movie makes me wish that I could have a superpower, too. I think I would want to have super strength or the ability to fly (or both:lol:). Since that will never happen, I am just going to keep on dreaming!

Until next time,

RK

crazycrochet20

Monday's seem to be the worse days of the week for me. I feel like my worst days always are on Monday. Since today is a Monday and it was another bad day, I thought I should do a blog post about some funny physics things that I found on Google and Pinterest. These all made my day a little bit better and I think they will make yours better too. I hope you all enjoy and let me know if you find anymore good ones! I love a good laugh!:lol:

Until next time,

RK:jig:


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This sounds exactly like something *my* physics teacher would do to me. Even though I hate physics I'm not above laughing at a physics joke

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Image result for funny physics

YES! Physics = fun

Physics humor #physics #sxuencehttp://writeonpurpose.com/8179/blissful-life/self-mastery/resistance-is-futile-what-you-resist-persists

crazycrochet20

Have you ever noticed how physics is everywhere and in every little thing that you do? Well of course you have because gravity is great and all. Anyways, there are so many topics and ideas that physics can relate to and it is absolutely incredible! I had originally wanted to talk about physics in the human body but then I came across the topic of medical physics. MEDICAL PHYSICS IS A THING! Medical physics is exactly as it sounds, physics that is applied to the medical field. That might not sound like a cool thing to you but it is actually really cool to look into.

See the source image

Medical physicists can often be found in hospital and universities where they are either working with patients or doing research. The ones who work in hospitals often work with radiotherapy, radiology, x-ray, ultrasound and nuclear magnetic resonance. Medical physicists can often play key roles in a patient's treatment plans. One prominent example is helping to treat cancer patients. Physics can contribute to saving lives!

Until next time,

RK

crazycrochet20

A Foucault pendulum is a device that has been used to prove that the earth rotates. It was discovered in 1851 by a French physicist, Leon Foucault, who wanted to prove the earth's rotation and did so with his pendulum. Ideally, a Foucault's pendulum should rotate at a fixed point on surface of the earth but unless it is located at the poles, the pendulum is rotating as the earth rotates. When gravity is the only acting force on the pendulum, the pendulum will swing and rotate back to its original point in approximately 24 hours. Although the pendulum's would eventually stop due to air resistance, there is often an electromagnetic drive that is used to keep the pendulum going as it swings.

See the source image

All around the world, there are now pendulums often in science museums and colleges. In our area, there are several within driving distance and I would love to go an see one soon.

Until next time,

RK

crazycrochet20

Creating a Top

Wow! It is already December and we are working on rotation in class! Last year, this unit was one of the worst for me because I truly did not understand any of the concepts. I have started to figure out some of the equations and concepts but, I am going to have to work hard all this week in order to really understand the unit.

In class last week, Mr. Fullerton gave us a challenge to solve. He gave us a pencil, two small paper plates and six pennies. Our task was to make a top that would spin for a longer period of time from those materials. For the blog post this week, we have to explain how this activity relates to the engineering design process. If I am being honest, I had no idea what it was and typed it right into the handy dandy Google. I found a website (sciencebuddies.org) which gave me the steps to the engineering process. 

Those steps are:

  • Define the Problem
  • Do Background Research
  • Specify Requirements
  • Brainstorm Solutions
  • Choose the Best Solution
  • Do Development Work
  • Build a Prototype
  • Test and Redesign

I definitely think that all of these were used in the activity with some of them slightly combined and happening all at once. Our problem was creating the top that would stay spinning for more than just a few seconds. Our research came from the information that we could see coming from the actual top and our background knowledge from the physics we had been learning. The requirements came in the form of the items we could use to make the spinning top which were the pencil, paper plates and pennies. The next few steps were combined because of time and we began to use trial and error to try and build the top. Brandon and I immediately knew that the the plates would have to have the pencil going through the center. We tested out where the plates would have to go on the pencil and eventually found that it had to be placed towards the bottom of the pencil. On the plates we tested the different distances of where to put the pennies and ended up putting the pennies at about an even distance towards the outside of the plates. Our final aspect that we fixed to make the top spin longer was put a small piece of tape at the tip of the pencil to keep it from spinning around all over the table. After that, we had created a top that spun for a decent amount of time with the many aspects we changed and tested.

The next question we have to answer is relating this activity to moment of inertia and angular momentum. For the moment of inertia, the mass and radius are the factors that change moment of inertia. Since we could not really change the mass of the object, spreading out the pennies to create a larger radius impacted the moment of inertia for our top. For the angular momentum of the top, the moment of inertia and angular velocity impacted the top and allowed it to spin for a longer period of time. These two concepts combined created the top with lots of trial and error for the perfect one.

Until next time,

RK

crazycrochet20

In my previous post, I discussed the physics behind hurricanes and their formation. After the crazy lightning storm we had last night, I think writing about lightning and how it connects to physics is a good topic for this next blog post. Image result for lightning

Lightning storms are an example of the electrostatic that occurs in nature. The result of the build up of the electrostatic charge in the clouds are those terrifying strikes. The lightning wants to take the path of least resistance where it branches out and grows. The negative particles in the clouds want to reach the ground which leaves the strikes coming down. Just like hurricanes, lightning is quite dangerous and everyone should avoid being outside during lightning storms. Everyone should also avoid standing outside with a large metal pole during one of these lightning storms unless you the desire to get struck by said lightning. :angel:

Until next time, 

RK

crazycrochet20

Hurricanes

Physics is everywhere in real life! Most people don't think about it, but weather is an aspect of physics. After all of the major hurricanes this year, I think looking at the physics behind the hurricane is a good idea. Hurricanes are formed when high air pressure intrudes in cold air pressure space which then rises and starts swirling and forming extremely high winds and destructive storms in a matter of days. The picture below shows why these storms are formed in the tropical regions and are able to create so much damage once it reaches land.

Image result for hurricane formation

The major physics aspect that I took from hurricanes is the Coriolis Force. This force follows Newton's Second Law but it has a rotating reference frame. When the force is applied to the Earth, it is often times called the Coriolis Effect. In most cases, the rotating object is the earth which helps account for some of the motion of objects on the earth. Looking from above, the object appears to move straight out, yet when looked at from a different angle, the object seems to have a curved path outwards.

Corioliskraftanimation.gif

When hurricanes start to form, the air that is brought in is deflected perpendicular which also creates the spiral motion. This force also initiates the movement of the hurricane often towards land due to the rotation of the air. Once a hurricane reaches land, destruction will soon follow and remain.

Until next time,

RK

crazycrochet20

Roller Coasters

Roller coasters are great examples the concept of conservation of energy. Using the knowledge that the initial energy should equal the final energy, we can use the equation Ui + KEi = Uf+ KEf . An example of a real life roller coaster that this equation works with is the Ride of Steel.

 

The website gives the information that it is a 205 ft drop (62.5 m) but the total height of the ride is 208 ft (63.4). Even though the max speed of about 75 mph (33.5 m/s) is listed on the website, we want to confirm that information through the use of conservation of energy. We are looking for the max speed at the bottom of the first large hill. For this problem, we are going to say that the velocity at the top of the hill is about 0 m/s.

mgh+(1/2)mv2=mgh+(1/2)mv2 ----mass cancels out---> gh+(1/2)v2=gh+(1/2)v2 -----plug in variables-----> (9.8 m/s2)(63.4 m)+(1/2)(0m/s)2=(9.8 m/s2)(.9 m)+(1/2)(v)2 -----solve for v-----> v=35 m/s

Because some values were rounded to make the math easier, the velocity for the Ride of Steel does appear to be around 75 mph.

Until next time,

RK

crazycrochet20

Before today, I would have never known who William Rowan Hamilton was. The only reason that I now know of him is because of a fantastic singing video about him. (It's a cool video, you should watch it!) Hamilton was an Irish mathematician in the 19th century who made many contributions to optics and classic mechanics. He was crazy smart. He spent his youth learning languages and then at 15 went on to discover an error in a physics theory along with contributing to other ideas. Hamilton discovered a number system that extends the complex number system as well. (ijk=-1) Overall, he was a pretty cool guy that now has a pretty cool song.

 

RK

crazycrochet20

A Box of Minions

At the start, many of the yellow minions with cool goggles and a few strands of hair were captured by the evil Gru. Gru did not want them anymore so he decided to throw them all into a box to ship them off to an island in the middle of nowhere. Gru pushed the box at a constant speed along the ground that had friction. Once he got to the car, he realized that he would have to lift the box with a certain force. The work that Gru does is equal to the negative change in potential energy. He then flies the box of screaming minions to the island. Instead of just kicking them out of his vehicle, he uses a pulley system to reach a platform above him. He is standing with the box and himself on a platform and holding the rope. The power that Gru would have to use to sustain a constant velocity would equal the force times the velocity. From that point on the platform, Gru has a 1000 W electric motor that will raise the platform up a certain height. In 10 seconds, the box will raise that height as Gru runs away as fast as he can. However, Gru did not know that the minions had stolen the freeze ray and were waiting for the perfect time to use it... The minions stole the vehicle while Gru watched, frozen in place. Gru learned his lesson, never become an enemy of the minions.

RK

 

crazycrochet20

I Drop Everything

Over the course of the past week, I have started to notice that I tend to drop everything. Anything from hair ties to binders to my phone. I am honestly surprised that most of the things that I have dropped have not broken. When we started learning about drag forces and air resistance, I began to notice how long the items take to fall. My math homework definitely seems to take longer to reach the floor compared to a small hair tie that seems to fly right to the ground. Even though we just took the test in class yesterday, I definitely need to focus a little bit more on actually learning the derivation for problems and making sure that I really know and understand it before I take the next test. I have been confused on the math of it since I read about it in the textbook but I hope that I can focus the next few days on getting it down pat.

Until next time, 

RK

crazycrochet20

When most people think about field hockey, they think about the stick that looks like a candy cane. The ball can only be played on the flat side of the stick which makes field hockey a difficult game to play.

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Newton's first law says that an object in motion will stay in motion until acted on by an outside force. When the ball is hit down the field, the reason it stops after some distance is due to the friction acting as an outside force which slows the ball and brings it to a stop. The surface that is played upon plays a role in the speed of the ball and in the end speed of the game. Grass fields are more difficult to play on with the grass because the ball does not cut through as quickly. Acceleration and changing directions also plays a huge role in the game because players have to quickly adjust speed and direction to dodge around the opposing team. Efficient dodging creates a space and cuts out the defender and makes their job a lot more difficult.

That is all for now!

Until next time,

RK

crazycrochet20

So while I was avoiding homework, I went onto Instagram and started scrolling through the explore page. While doing that, I stumbled upon something that I realized I could totally use for this blog about physics. I did not know what they were called at first so I pulled up the Google and typed in "pendulum wave thingy" and now I have learned that it is called Newton's Cradle. The one that I first saw was really cool because it was glow in the dark which caught my attention right away. The video that I then found on Youtube showed that the guy must have made it himself which is really cool! If I have time in the near future, I would love to create one of these for myself. 

Here is the video... 

Until next time, 

RK

crazycrochet20

Effective Studying

Video 1:

a)       1. Learning is fast             2. Knowledge is composed of isolated facts          3. Being good at a subject is a matter of inborn talent      4. I am good at multi-tasking

B)      For me, I feel like all of these beliefs have an impact on me because I definitely have believed in all of them at some point in time. The final one about multi-tasking makes me think the most because I do check my phone while studying and try to get other things done all while attempting to learn. The third one also hits me as something I have believed in for so long because I know that I think about how some people are naturally good at certain subjects, like physics, and I do sometimes get discouraged because I think that I cannot possibly do as well as they do when really, I can do that well if I spend the time and put the effort into it.

c)       In the video, “metacognition” refers to the awareness that students have when it comes to their level of understanding for different topics. Poor study skills leads to poor metacognition and an overconfidence which then leads to lower grades than they would expect.

Video 2:

a)       The most important factor in successful learning is what you think about while studying.

B)      “Deep processing” means going further into information instead of just focusing on what is on the surface. Going further and relating information to personal ideas can help in remembering that information whether with intention or without.

c)       1. Minimizing distractions to maximize focus will help me to improve my learning because I will be able to take in and start to understand information better without distractions such as my phone in the way.                 2. Developing accurate metacognition will improve my learning skills because I will have a sense of what I know and what I do not understand to help me realize and focus on the information necessary to spend more time on for better grades and learning in the end.       3. Deep and appropriate processing of critical concepts leads me to try and relate information that I need to know to me while going deeper into the learning instead of just what is on the surface.          4. Practicing retrieval and application will improve my learning because I will learn how to really learn and understand information through practicing good learning strategies.

Video 3:

a)       1. Elaboration will help me to actively learn because it puts an emphasis onto relating topics to each other which forces me to really think about what I am learning.              2. Distinctiveness will help me with knowing the difference between topics that are closely related or even completely different.         3. Using a personal learning skill helps in remembering a concept because it is something that can be thought of right away say with the concept of throwing a ball up in a moving car to experience and see where it will land. Labs help to create personal experiences because you can see what is there and remember since you experienced it. 4. Using appropriate retrieval and application skills will force me to realize what concepts I understand by being able to quiz myself in how well I know and can explain certain ideas.        5. Automaticity will help me with the basic ideas because hopefully I will find and solve equations enough that when I need to know them, they have been completed so many times that they become easy.      6. Overlearning will help when for key points that I know I should expect on tests so I can automatically remember information because of the depth in the learning.

Video 4:

a)       1.    What is deep processing?

 2.       Will question generation help to increase the understanding of complex materials?

 3.       How does a student know whether a teacher will be testing on facts or concepts?

 4.       What are good question generation skills?

 5.       What are the differences between good note taking skills and bad not taking habits?

 6.       Have these questions helped you to understand certain skills better?

B)    The tips on taking notes applies to video lessons because you should not write down every piece of information that is given in the video, only they key and important concepts. Some examples are good in note taking as well because when looking back you can see exactly what the concept means in detail.

c)       Forming a study group with rules for effective group study sessions

Video 5:

a)       You should avoid going into denial and panicking when an exam goes poorly.

B)      You should examine how you prepared, review the exam, talk with your teacher, examine study strategies and, develop a plan.

c)       1. Commit time and effort

2. Minimize distractions

3. Attend class

4. Set realistic goals

5. Don’t begin to slide

6. Don’t give away points

 

crazycrochet20

Meeeeeeeeee

Hello to everyone who will ever read this! I hope you enjoy!

For as long as I can remember, I have had a love for crafts and yarn. I love crocheting and creating blankets for family members and people in need. I am not sure if there is such a thing as a professional crocheter (I don't think that's even a word) but I would totally become one. Maybe I can do that when I retire or something when I get older. Because I am super busy most of the year, I sadly do not get very much time to enjoy crocheting. School obviously takes up a ton of time (as with most students) along with field hockey in the fall, bowling in the winter and work all year round. In the future that is quickly approaching, I want to go into college for engineering and also accounting although I have not a single clue what I could possibly do with both interest together since they are extremely different. Anyways, the reason that I am continuing with physics this year is because of my interest in engineering. I really struggled with trying to grasp onto concepts last year so I hope that I will be able to understand a decent amount of them from the basics that I somewhat understood last year. I have heard that this physics class is extremely difficult and has a ton of work with it which terrifies me, yet at the same time excites me. I love the satisfaction of solving a problem but at the same time I absolutely despise the frustration of getting stuck on something that I can't solve. Although physics will not be a breeze for me this year (or any year to be honest), I hope it will teach me lessons that will last a lifetime and beyond.

Until next time,

RK

 

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