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About eclark

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  1. The silver egg illusion is an experiment in which an egg is charged over a candle until it is completely covered in soot. Once the egg is completely covered, it should be dunked into a cup of water. The egg turns silver because the soot particles are hydrophobic so only the top part of the soot will be wet. The surface tension supports the water in between each grain of soot and a layer of air between the water and the soot forms. Because the surface of the water reflects light very well due to total internal reflection, the egg will end up appearing silver.
  2. I love to bowl even though I am horrible at it!
  3. The answer is no. This image seems too good to be true, but this experiment is completely possible. The reason the pencils are able to go through the plastic bag without leaking is because of the material of the Ziploc bag. The plastic baggie is made up of polymers which are long chains of molecules that are flexible. When the pencil is pokes through the bag, it slips in between the chain of molecules. They then make a seal around the pencil which ensures that water will not leak out.
  4. It is fascinating to see that the two alone are weak, but combined are indestructible.
  5. Luigi is my second favorite Super Mario Bros character, besides Yoshi
  6. Waffles are my favorite too!
  7. I never thought of microwaving an airbag, but the explosion was really cool.
  8. That's really interesting! Now I know how my dog is able to stand on her hind legs.
  9. Very interesting! I always thought the wave on land would carry farther.
  10. This seems l like a very interesting game.
  11. A couple of months ago, I watched Marvel's Doctor Strange. The physics of the movie really fascinated me, so i decided to delve deeper and learn about the physics of this very interesting movie. Doctor Strange discusses the idea of the multiverse. The multiverse is the hypothetical set of possible universes, including the universe in which we live. These universes make up everything that exists: the entirety of space, time, matter, energy, and the physical laws and constants that describe them. For instance, I could be eating pancakes for breakfast in one universe and cereal in another. Doctor Strange suggests that there are many parallel universes each with their own laws. They refer to these universes as dimensions in which different physical laws can be changed. Gravity can be 20 times stronger in one universe over another. Ultimately, these universes or dimensions can meld together and connections can be made between them. Doctor Strange also discusses the idea of consciousness and the mind-problem- the question of how the human mind and body interact. Scientist still have no idea how the human body and mind can coincide. To answer this question, it is important to study religion, psychology, and nuclear physic together. While people may use the words brain and mind interchangeably, they are two separate complex entities that work together and it is important to know why this is.
  12. Today is the final day of Blogmas. For this very special day, I will find the frictional force of a child riding on sled. The average mass of a 10 year old child is 31.9 kg. To find the normal force I multiplied the acceleration due to gravity by the mass of the child and got 312.62N. The coefficient of between snow and plastic is .3, so the force of friction is between the sled and the ground is 93.786N.
  13. For the 7th day of Blogmas, I will discuss how long it will take Christmas cookies to cool to 75° F once they are taken out of the oven. For this calculation I will use Newton's Law of Cooling. This law states that the rate of cooling is proportional to the temperature difference between the object and its surroundings; therefore, dT/dt = k(T-TC) with Tc the constant temperature. To find this calculation, I first found Tc to be 70° F because my house temperature is kept at this constant. Next, I used the separation of differentiable equations method to integrate the Newton's Law of Cooling Equation. As a result, I found the equation to be T(t)= Ce^(kt) + 70. To find the value of C,I set Ce^(kt) equal to 350° F( the temperature of the cookies immediately after they were taken out of the oven) and set t=0. With this information, I found C to be 280. I measured the temperature of the cookies to be 300° F after 5 minutes. Using this information, k was measured to be -.0393. After finding all the unknowns, I finally found the time it takes to cool to 75° F to be 102 minutes.
  14. For the fifth day of Blogmas, I will discuss a specific scene in the movie Home Alone. At one point in the movie, two burglars enter the house because they believe nobody is home. Little do they know Kevin is still home and ready to protect himself. At one point, he swings a paint bucket and it hits one of the burglars. I thought it would be interesting to calculate the length of the string the paint bucket is attached to using the equation T=2π+(L/g)^(1/2). The period of the paint bucket is 4s granted there were cuts in the movie and human error ) and acceleration due to gravity is 9.8 m/s^2. With this information I found the length of the pendulum to be 3.97m.
  15. For the fifth day of Blogmas, I will be discussing the physics of singing Christmas carols. When someone is singing, they emit sound waves. Because sound waves are mechanical waves, they are required to travel through a medium. When traveling through this medium, the particles vibrate creating a frequency which is measured in vibrations per second or hertz. In turn, the higher the frequency, the higher the pitch of the singer. The loudness or quietness of the singer is measured by the amplitude of the wave. The larger the amplitude, the louder the voice of the singer. Who knew so much went into singing Christmas carols?