Jump to content
Sign in to follow this  
  • entries
    10
  • comments
    14
  • views
    202

Entries in this blog

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

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 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

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

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.

IMG_4712.thumb.JPG.1d464fd686282134a20e0ad62e953438.JPG

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

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

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

 

Sign in to follow this  

Terms of Use

The pages of APlusPhysics.com, Physics in Action podcasts, and other online media at this site are made available as a service to physics students, instructors, and others. Their use is encouraged and is free of charge. Teachers who wish to use materials either in a classroom demonstration format or as part of an interactive activity/lesson are granted permission (and encouraged) to do so. Linking to information on this site is allowed and encouraged, but content from APlusPhysics may not be made available elsewhere on the Internet without the author's written permission.

Copyright Notice

APlusPhysics.com, Silly Beagle Productions and Physics In Action materials are copyright protected and the author restricts their use to online usage through a live internet connection. Any downloading of files to other storage devices (hard drives, web servers, school servers, CDs, etc.) with the exception of Physics In Action podcast episodes is prohibited. The use of images, text and animations in other projects (including non-profit endeavors) is also prohibited. Requests for permission to use such material on other projects may be submitted in writing to info@aplusphysics.com. Licensing of the content of APlusPhysics.com for other uses may be considered in the future.

×