# kmiller0212

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## Blog Entries posted by kmiller0212

So far this year, I have to say my favorite lesson this year is went we were working with the machine that shocked us when we touched it. I thought this was enjoyable becaue it was very funny to watch people get shocked when they went to touch or even kiss the Van de Graff Generator. I think the created a very enjoyable setting to learn about how proton, and electrons interact between each other, and what pain they an create when they or not ground. I personally tried touchig the machine and I quickly pulled my hand away because it hurt so bad! But some people were brave enough to go ahead and kiss the thing... I would never. I also found it so fascinating how we all could hold hands as a class and send one huge shock through all of use. I never knew soemthing was possible. But his wwas my favorite demonstration for a class period. I thought it also helped expand my knowledge on how proton, neutrons and electrons interect!
Lacrosse is a very physical and rough sport. People are always getting checked, pushed and tripped. I myself have taken many falls throughout the years I have been playing lacrosse, but Annie B takes harder falls then I ever have! One of Annie's most famous falls is when she was running very very fast and then from behind a girl cross checked her in the back and then... SMACK Annie's face smacked down on the ground. But as always Annie's stood up with a smile on her face and laughing. But, Annie's fall has allowed me to write this blog post because she fell and this connects to projectiles. We can assume that Annie fell at 9.81 m/s2 due to gravity. Also, Annie runs faster then normal humans, it might take her 10 seconds to run 100m. With this information, we can determine how far
Annie ran and then if we know how long it took her to fall.. about .5 seconds we can determine her velocity while running and her velocity while falling. While she is running, we can use the equation v= d/t to determine her velocity, so v = 100//10s she runs at a speed of 10m/s which is pretty fast ( and I'm just guessing). Also is we know she fell with an acceleration of 9.81m/s2 and it took .5 seconds for her to hit the ground. We can determine her velocity while falling. a= v/t and rearrange it to v= at so (9.81m/s2)(.5s) which is about 5 m/s... ouch she falls fast and hard!
Well Annie's falls are only part of how entertaining she is to watch aside from her amazing skills!
For those you that don't know, Hannah O'Neil has an amazing singing voice. Before every home game, she sings the national anthem, and it makes me so happy and gets me ready to play. Because of sounds waves, I am lucky enough to hear her. Sound waves are mechanical waves that are detected by the hairs in our inner ears. Sound waves can travel through air, water, steel and wood. But I like when Hannah is standing directly near me singing to me. However, if I am not lucky enough to have her standing right next to me, I can still hear her from a distance apart even if I cant see her. Therefore, we can use the equation, v= distance/ time to determine how far away Hannah is from me. In STP, sound moves at 331m/s and if it takes me .25 second to hear her voice from the moment she begins singing, I can determine how far away from me she is from me. By rearranging the equation to, distance = velocity X time, (331m/s)(.25s) Hannah is about 83 meters from me. Although not an ideal situation, but her beautiful voice allows me to hear her even when far away!
We have recently studied the concept of circuits. there are parallel and series cicuits. In the parallel circuit in one of the circuts breaks then the circuit continues to work fully. However, in a series circuit, if one part of the circuit breaks the whole things stops. Well, in the beginning of march we had our morning sessions for lacrosse. Some days we would do circuit workouts. We had 6 different stations and with in our groups we had to all do the different work outs together and try to motivate eachother. I belive in this team situations we are a series circuit. This is becasue, we are only as strong as our weakest link. In the circuits, we all have to work our hardest for the one minute we are doing that one exercise. But, we all have to stay strong becasue the moment one of us starts to complain or gives up, we all fall apart and loose sight of the ultimate goal. We all have to work together and stay strong just like a series circut if we want to win. Becasue if not, we do not have the sucess we want!

Over Spring Break I was fortunate enough to cross the Atlantic Ocean and travel through out Italy. For the last few days we spent our itme in Venice. If you do not know, Venice is a cluter of islands and is then called a region of Italy. Aside from its beauty and uniqueness, there is a lot of physics in the water surrouding the islands.
The days we had to travel off of the smaller islands we had to take a boat to one of the larger islands. Now I can barely stand riding shotgun in a car on the road without getting car sick. Now i am expected to ride over water and their waves and not throw up my breakfast. But I distracted myself with the beautiful sites around me. But also, looking back I could have practiced calculating the speed of the waves. This can be easily done by measuring the distance between the waves and how many times in completes a full cycle. With this information, I can easily use the equation. Velocity= frequency x Lambda. This will allow me to understand the physics behind the waves and just how many times I will feel the waves while I am riding in the boat. Maybe some how this information could help me not feel as sick while riding the waves!
My friend Jamel and I were hanging out one day so we decided to go on a walk. We walked alll around town trying to find something fun to do. So we found this really high stair case with a plat form at the top. So we climbed up the super high structure and stood at the top. We climbed 15m and boy were we tired, however while we stood there to catch our breath, i realized we could figure out the amount of gravitational potential energy we each had. But i easily could calculate it. Well, the equation of PEg= mgh. If we plug in the missing information we can find out who has the most Jamel'sPEg=(90kg)(9.81m/s2)(15m)=13244J Katie's= (60kg)(9.81m/s2)(15m)=8829J. I guess Jamel has a lot more potential then I do but hey we cant win at everything.
Well one night I thought it was a great idea to go to the gym and lift some weights. Well i was wrong, becasue the next day, i could not lift my arms, and if i tired i almost cried in pain. Well, i started to think about it and there was a lot of work done while i was lifting those weights. I picked up my 3.6 kg dumbells and started to lift them above my head .46m. I did 3 sets of 12 and that was enough for me. But, i can calculate the amount of work done for one rep. Well, W=Fd and the force= ma there for F=(3.6kg)(9.81m/s2) = 35N and when plugged into W=Fd= (35N)(.46m)= 16.1J. May not seem like a lot, but it sure did feel like it! maybe next time I'll pass o nthe gym and do some serious work sitting on my couch and watching tv!!
It was a great tuesday night for some high school girls basketball. Irondequoit hosted the Hilton Cadets and it was a huge game. It was very physical and very close in score. However, the back of my head took the worst blow of the night. One of the girls just absolutely laid me out and well.... i landed on my head. Although i was in a lot of pain, I can look back now and see just all of the physics that this girl did to me. Well she had a lot of momentum which when she made contact with me, I conserved the same amount of momentum she had when she was running at me with a head of steam.Lets say she was running at 5.5m/s at me and she weighs about 55 kg i can use the momentum equation (p=mv) to find out the amount of mometum she had. p=(55kg)(5.5m/s)= 303N/s. Thats a lot... well enough for me to fly off my feet and land right on my head. I guess my intertia was not very high that night.
Well hunting season just ended and for people like my dad this is a very sad time. However, my dad loves to go bow hunting and wanted to teach my a few things while shooting at a target. It was pretty cool to see how the bow helped the arrow most so fast in the air and hit the foam target with so much force. And I thought about all of the physics that connects to this. Well i look mostly at the interaction between the arrow hitting the target. The arrow starts at rest and after it is released moves at about 67 m/s in horizontal motion and he stands about 20 meters from the target and it takes about .3 seconds for the arrow to hit the target. With this information I can use my projectile equations and solve for the acceleration. And if you use one of the projectile equations you get the acceleration to equal 444.4 m/s2 which is super fast. I think its so cool how one of my dads favorite activities can help me understand projectile equations better.
All of my memories go back to this summer when I went to Seabreeze wiht some friends. We were sp excited for only one ride, THE SCREAMING EAGLE. Its the ride that turns you up side down and make your stomach hurt after only the first turn. The worst is when you chage direction and for that moment you stop upside down and yo uthink for sure you are stuck. But other then this being a terrifying ride that makes me almost burst into tears, it connects to physics. Its design and funtion allows it to act as a perfect circular motion example. Its acceleration is pointed towards the center where it is sturdy. The Screaming Eagle has the circluar motion characteristics which would make it an awesome ride to study for the unit!

Sleeping is one of the most important things in life to survive. With out sleep, the body is not able to function properly throught out daily activites. I love to sleep, and sometimes I wish I never had to wake up. One might ask how that exactly connects to physics, well, I can say it connects to Newtons Laws. More specifically Newton's first law of motion, which is often stated as; n object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.To me this completely connects to physics.

When you are in that deep sleep where you are having great happy, rainbowy dreams, but then the next minute you are wide awake wishing you can go back to sleep. you were at rest but the nwoken up by an outside for, whether is is an alarm clock, your mom screaming at you to wake up or simly the sun shining throught the curtain, you are not longer at rest. However, one you are awake, realistically, you can oulll allnighters and not go to sleep, but your body become sleep deprived, which is an outside for which casue the object in moretion to stop and stay at rest until woken up agian. Sleeping is a part of physiscs, even when it is one of my personal favortie things to do.

This blog post is strictly through observation, not experience. Most high schoolers have this fascination with fights. When it happens it is the big talk for the day. It is purely entertainment. But what most students down know is that physics is what really happens during a fight. The fist applies a force on the face, the person who got hit in the face will have some bruising and stiffness. But what happens to the fist, well the next day that is sore, swollen and sometimes even broken if they swing hard. But its not the fact that the fist hit the face, the fact that the face hit the fist is what causes the pain. This logic can be explained through Newton's Third Law: for every action, there is an equal and opposite reaction. This means that when forces interact, they have forces that are equal magnitude.

Now, the excuse you can say to your administration is "Well his face hit my hand" because although it seems like you're trying to be a smart-aleck, there is some truth behind it!

I do not anyone recommend to try this at home, or anywhere in general!!
I've been playing lacrosse since I was 7 years old. To me it was always just a fun game which you throw a ball around in the air and try to out score your opponent. But after starting physics this year, I have realized the game of lacrosse is all physics. The main topic I have noticed it projectiles. There are horizontal and vertical projectiles. when I throw a long pass down the filed to my teammate, the ball take a parabolic path across the field. It is cool because I can take my knowledge of physics and use that to know how hard I need to throw the ball down the field to get it a certain distance.

Lets say I needed to maximize my horizontal distance to get the ball down the field, I know I have to release my throw at a 45 degree angle. Not only that but if I need to get it over my opponent I need to know that to maximize the height of my throw, I need to release it at a 90 degree angle. This is all fascinating to me because knowing this could help me improve my throwing accuracy which will in turn help my team win!

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