https://www.exploratorium.edu/snacks/disappearing-glass-rods

the above video demonstrates the optical illusion created when a piece of glass is put into a liquid with a similar refraction index as the glass. The glass bends the light rays in a similar fashion as the water does causing the glass rods to “disappear” in the liquid. The lines behind the tank of liquid shows that the glass of the box has a different index causing the stripes on the back wall to look distorted or “refracted” because it bends the light differently because of its index.

Wave Interference

Posted on December 5, 2017 by connors12015

Click Me

The above link is a link to the videos demonstrating different forms of waves.

Constructive waves are waves that are moving against each other but in the same vertical direction. When they meet the amplitude is combined and once they pass they go back to how they were before they met.

Destructive waves are waves that are moving against each other but in opposite vertical directions. When they meet the amplitude is add together reducing the overall amplitude. Once they pass they return to how they were before they met.

Archimedes Challenge

Posted on December 3, 2017 by connors12015

The Catapult

During the past week in physics class we were challenged to construct an invention from a list of various inventions ranging from a simple lever system to the invention of the steam engine. My group chose to make a mangonel catapult. This catapult was invented in 400 BC by the ruler of Syracuse, Dionysius. The purpose of the catapult was to hurl projectiles long distances and over walls and through them. the invention of the catapult led to people wanting objects thrown harder, farther, and with more accuracy. This lead the invention of gunpowder was invented in the 14th century putting all catapults to rest and destroying all need for them having them replaced with canons which were more accurate, and easier to move.

The process…

Day 1 – Stan and I drafted different types of catapults we could make and finalized our decision on the mangonel catapult.

Day 2 – Find and mark wood to the appropriate lengths for the mangonel catapult

Day 3 – assembly of parts

Day 4/5 – test and assess

Pictures on Drive link ( click here )

The Physics…

The physics behind a mangonel catapult is the following: an applied force acts on the arm of the catapult bringing it back into the throwing position gaining potential energy all the way down. Once the arm is released, that potential stored energy is converted into kinetic energy as the projectile is launched. However, not all of the energy goes into the projectile. Some of this energy is lost to the recoil of the catapult as the launch arm collides with the brace and some energy is lost to sound. The initial velocity of the projectile is equal to the velocity of the cup at the end of the launch arm. Once launched, the projectile is acted upon by air resistance as it travels through the air while the force of gravity pulls it down towards the earth’s surface.

Below are the sites referenced from.

https://www.real-world-physics-problems.com/catapult-physics.html

https://en.wikipedia.org/wiki/Mangonel

https://sites.google.com/site/physicsofcatapults/home/how-a-catapult…the…/mangonel

https://sites.google.com/site/physicsofcatapults/home/history-of-catapults

www.lordsandladies.org/mangonel.htm

Newton’s Laws of Motion

Posted on October 30, 2017 by connors12015

Newton’s first law of motion states that, “if a body is at rest or moving at a constant speed in a straight line, it will remain at rest or keep moving in a straight line at constant speed unless it is acted upon by a force.” This is also known as inertia. This is demonstrated when the ball is at rest and doesn’t roll away from the camera shot. This is also demonstrated when the ball is rolling and doesn’t stop until kicked.

MVI_6910-1d6r55q MVI_6911-1ifad4c

Newton’s second law of motion says that any object with a mass and an acceleration has an unbalanced force acting upon it. The law is also shown as F=ma. This is demonstrated by Jed kicking the volleyball. His foot accelerates the ball forward.

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Newton’s third law states that for every action, there is an equal and opposite reaction. This is demonstrated when Jed hits the volleyball into the curtain and the curtain is disturbed and moved back from the volleyballs contact.

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fitness 11 goals update

Posted on October 9, 2017 by connors12015

So far, I havent had a chance to clock my arm but my vertical has increased by an inch or two. I am adjusting one of my goals, and that is to increase my vertical by 6-8″ instead of 5″. I’m hoping to get my arm clocked at some point during the winter and record my pitch velocity.

fitness 11 goals?

Posted on September 11, 2017September 11, 2017 by connors12015

My goals for fitness 11 is to build up my arm strength enough to pitch 83+ mph, build up my leg muscle to increase my vertical by at least 5″, and also to lose some weight.

English Blog Post 1

Posted on February 10, 2017 by connors12015

a) What is ironic about George’s (or the authors) comments on competition, laws, and society in the story? Support your opinions with evidence from the text. You may incorporate quotes if you find necessary, but this is not required.

George is not totally enthused by the idea of being locked up with weights and being scrambled with an ear piece to dumb down thoughts every third minute. “That dance—it was nice,” said Hazel. “Yup” said George. He tried to think a little about the ballerinas. They weren’t really very good—no better than anyone else would have been,” (Page 59) He compares all the ballerinas to one another and with everyone else because anyone that is above the standard is brought down with handicaps to make everyone ‘equal’. George basically says that anyone can dance to music if they wanted to. George also refers to the law where if he were to remove any weight from his handicaps, he’ll get fined $2,000 and 2 years in prison per ball removed. “just take out a few of them lead balls. Just a few.” “Two Years In prison and two thousand dollars fine for every ball I took out,” said George. “I don’t call that a bargain.” (Page 60) “Reckon it’d fall all apart,” said Hazel. “What would?” said George blankly. “Society,” Hazel uncertainly. (Page 61) George mentions to about what would happen to society if they all started to let out a few balls or take off their headset for a little bit. They’re world is all together and equal with those handicaps, with them chaos would ensue due to order no longer being. When chaos is all they need to make everyone happy.

b) Describe George and Hazel’s reactions at the end of the story. What do you think the author is trying to say through them?

Hazel’s reaction near the end of the story was sad because she witnessed her son’s death on live television but not as teary as you would think it would be because she has a natural disability. George’s reaction is comforting towards Hazel because she’s crying about something she had forgot about. The author is trying to tell us that equality would result in a species of brainwashed, stupid, weak, and overall useless humans. Everyone says, “strive to be the best you can be”, or, “work hard on your education and work.” In this alternate reality, it doesn’t matter because the smarter or stronger you are, the more heavily handicapped you get.