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  1. Today
  2. The Physics of Broken Things

    On the bright side, replacing circuit breakers is fairly straightforward. Car engines, now... that's another story. Good luck!
  3. Yesterday
  4. The Physics of Broken Things

    "Whatever can go wrong, will go wrong" Murphy's Law seemed to hold true recently, at least in the Bansbach household. This weekend certain appliances seemed to be shutting off randomly, and under further investigation my dad found out that we blew a circuit breaker. Not only had it stopped working, but it got so hot from the resistance that it started to melt. SO, a circuit breaker is meant to shut off your power if the system is overloaded. Your power is shut off when the excess current and the resultant heat from the resistance deforms two pieces of metal in the breaker which start to "pull the trigger", when bent enough the trigger snaps two contact points apart, breaking the circuit (imagine that). So the overload from too many appliances being on would have tripped the breaker, but there was a faulty ground wire, so the high current had no where to be grounded to so the plastic started to mel P.S. something also went wrong with my mom's car's engine, it was stalling so we had to take it in to get fixed, and now we have a loaner car. So if you see me scootin' around in a big black chevy silverado, that's why.
  5. Dying

    I feel the same way! We can do this!
  6. Dying

    @HegelBot153 Huh???
  7. Kinematics Test Eulogy

    That's a lot of doom and gloom for someone who had a fantastic score on the exam...
  8. Kinematics Test Eulogy

    So on the twenty first of September in the year two thousand seventeen, anno domini we lost many good men to a test. What's important now, moving unwearyingly forward, is to not lose heart. Our forerunners have been through similar sorts so although our path may seem an onerous, impossible kind, a capable hand and mutual counsel will bring us fruition. Keep in mind that retakes are available, studying is worthwhile and AP physics C is a community. In this dreadful hour, we are not merely alone but we have each other's utmost generosity and the whole extent of one another's courtesy.
  9. Dying

    If you feel like you're on the low, take your time and don't go out of your mind. Your life is yours and the future isn't something that comes to you but you must seize it for yourself. Edit: spelling and grammar errors
  10. What Do Heinrich Gustav Magnus, Volleyball, and KFC Have in Common?

    We never have sufficient time in a P.E. unit to try things like this. Maybe it could have been better known if we could experiment with these effects. Sad but unfortunately true.
  11. Dying

    You can do it! And as I recall, you didn't "fail" the test so much as receive a score you're not overly thrilled with. Which happens to EVERYONE in here. Keep doing what you're supposed to and it'll all work out.
  12. What Do Heinrich Gustav Magnus, Volleyball, and KFC Have in Common?

    Absolutely fantastic post, and I love the jumper from Stanley -- that's how you serve aggressive!
  13. Foul ball physics

    Sitting on the third base line can be pretty scary in a big-league game. Especially if you have kids to wrangle who are more interested in their popcorn than the game.
  14. Physics of College

    Dear Mr. Vank -- it's fantastic that you landed on the moon... but did you land on time?
  15. Partial Derivatives

    Sounds like you're right back in the thick of it... how's school treating you?
  16. Partial Derivatives

    A partial derivative uses this nice formula. (f)/(x), where f:R^2->R is lim h->0 (f(x+h,y)-f(x,y))/h. Physics is everywhere, waiting, watching.
  17. Physics of College

    Dear Mr. Kennedy, I landed on the moon in Kerbal. I am a physics god. Please don't disrespect me -Chris Vank
  18. Physics of College

    Well, using the equation velocity=distance/time, we can easily calculate this. If the distance is 1.5 km, we can translate this to 1500 meters. If the time he has to travel to class is 6 minutes, neglecting air resistance, he has 360 seconds. Plugging into the equation v=d/t, we have v=(1500)/(360)= 4.17 meters/second. Pretty much chris better haul his one elix booty to class or he aint makin it p.s chris sis hot af
  19. Physics of College

    Hey y'all, Chris, a student at Cornell, wakes up at 8:59am for his 9:05 class. If the class is 1.5 km away, at what constant velocity does he need to travel in order to make it to class at 9:05? Neglect air resistance.
  20. Let's Get the Most Out of Studying!

    Ethan you're the man. Keep studying hard!
  21. Dying

    You can do it Mady!
  22. Let's Get the Most Out of Studying!

    Ethan you're the man. Keep studying hard!
  23. Foul ball physics

    Recently in an MLB game a fan was struck by a foul ball. This person was severely injured from the baseball. My initial question was why didn't this person just move out of the way. Well, easier said than done. An official league baseball has a mass of .145 kg, and the average velocity of a major league fastball is 40.3 m/s. this means that when the ball hits the bat, if the batter perfectly squares up the baseball, the ball can leave the bat at approximately 49 m/s which is equivalent to 110 mph. The individual that was hit by the ball was on the third base side, first row. This means that there was a distance of 50 meters between the batter and the person hit. The time it took for the ball to reach the fan was 0.92 seconds. Would you be able to react that fast?
  24. The holy grail of serves in volleyball is the jump spin serve. A serve going over a 2.43 m (7' 11 5/8”) can be understandably difficult for many, but higher level players are constantly trying to deliver more speed and directional movement to the ball in order to make it harder for the opposing team to return. The jump spin’s first benefit is, that by jumping, added height is given to the point at which the ball is contacted. By doing this, the difference in height between the ball and the top of the net decreases, allowing for the serve to follow a flatter path than if hit while standing. This effectively reduces the travel time of the ball by making it a one sided curve rather than a parabola. The added benefits of a spin serve is that the ball can handle much higher speeds than a float (no spin) serve, and requires more effort to pass. The Magnus effect is to thank for this. What happens is that, as the volleyball player starts their approach, they throw the ball up giving it spin away from themselves. They then jump and contact the ball as it spins, giving it the topspin required to achieve the effect. To summarize the Magnus effect, when an object rotates, it has air which clings to its surface and follows its rotation. This layer then collides with oncoming air, which hits the ball as it travels in the horizontal plane. The deceleration caused by this collision creates, in this case, a high pressure pocket of air above the ball and a low pocket of pressure below. The object then is acted upon by a lift force, in this case known as a Magnus force, due to the object being compelled to travel in the direction away from the high pressure pocket of air to the low pressure pocket. This illustration shows the top spin given to the ball, the low air pressure below the ball, and high pressure above the ball, and the resulting force. Effectively, the velocity can be increased since the greater the spin the faster the ball will drop. When passing the ball, players must also be cautious. If it hits their arms without providing some sort of counter spin, like pulling their arms in as it hits, then the ball will keep its spin from friction, and go off the passers arms behind them. The jump spin serve is a mean serve on many levels, and those, like TheNightKing (shout out), who can do it fairly consistently, are valuable at varsity level and nearly necessary to play in higher levels. Just make sure you put spin on the ball before you contact it as hard as possible, otherwise it will fly into the next county instead of hitting the court. Here are some other videos on the Magnus effect: Jump serve: Magnus effect explained and its applications: Added Note: Here is that KFC I was talking about...
  25. Last week
  26. Dying

    I was scrolling through Instagram and found this hilarious meme of someone's Tinder profile. It reminded me of earlier this week when Mr. Fullerton said that if a girl had the quadratic formula tattooed on her forehead, she wouldn't get a date. I guess nerds don't need love. Anyways, I entitled this blog "Dying" because, first of all, that meme made me die of laughter and, second of all, the first AP Physics C test killed me. With reflection I realized that this year is going to be a lot harder than I even first anticipated. I am not the smartest student on Earth, but I have an ambition and unwavering optimism in everything I do. Seeing that I "failed" a test really killed my spirits, and I am hoping that this class will not be the death of me. But deep down I know I can do it. AND YOU CAN TOO. We've just got to keep up with the work and keep trying. I learned that if I get slapped in the face by physics problems, I need to slap them back twice as hard.
  27. Something about mints or something

    This blew my mind and now I need a snack
  28. Physics is SUPER COOL

    Wow! I found the video very interesting to watch. It was also very soothing when they started moving in patterns. I would love to understand the physics behind this effect some day!
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