Recent content by Farzan

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    Friction Questions: Why does it increase and why does it lag?

    Alright, thanks for the responses. So dynamic (sliding) friction stays constant?
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    Friction Questions: Why does it increase and why does it lag?

    I understand that physics is mostly based on empirical evidence, but sometimes it's interesting to know how some things are explained. My questions about friction are: 1. Why does friction increase as velocity increases? 2. Why does it take time for friction to become equal to the...
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    Every number we know makes up exactly 0% of numbers

    Not sure if this is the correct forum, but here is a very simple concept I realized about numbers. Let's take an example number to be 1,564,003 Now let's say the variable "x" represents the quantity of numbers in our number system... so the amount of numbers. To make it simple, consider only...
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    Science, engineering or maths? >.<

    It's pretty much the same situation for me. I decided that it's impossible for me to choose at this point, even though I'm also headed for university soon. Math, science and engineering are all interesting to me. I can't even begin to choose among the various fields of them.
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    What Physics C textbook is easiest to self-study?

    Hello, I am a student interested in learning AP Physics C material on my own because the class is not offered at my school. My goals are - 5 on the AP Physics C exam(s) - Know calculus-based physics to compete in Science Olympiad I have taken the Physics B exam and Calc AB/BC exams (5...
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    Schools Undergraduate rankings of colleges' physics programs?

    Smaller schools are not good? I'm thinking I would prefer a low student-teacher ratio and small to medium population. Also, I could transfer to a different college if a graduate degree is not offered, right? I lived in California two years ago, now I'm in North Carolina. I've heard that UNC -...
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    Schools Undergraduate rankings of colleges' physics programs?

    I'm searching for colleges to apply to right now, and I think a good place to start would be to see how different colleges compare with respect to their physics programs. I don't know whether or not I want to specialize in engineering or physics yet, so colleges that are strong in both areas...
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    Testing Has anyone taken the SAT physics subject test?

    I took AP Physics B, and with some preparation (studying for the AP Exam) I got an 800 on the subject test. Like beta3 said, most of the stuff is fairly simple.
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    Wave-Particle Duality: Questions & Answers

    I'm confused about these questions too.
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    Measuring velocity and position of a particle

    I forgot one important part of this setup... there should be two devices to check for photons on the other side of the path. That way, you know the collision didn't occur. When the collision occurs, the electron should absorb the photon. The first collision's position is known because the...
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    Measuring velocity and position of a particle

    Heisenberg's imaginary microscope showed that it would be impossible to measure the position and velocity of a particle because observing it can change the position and momentum. However, assuming the laws of classical physics apply to these particles, I think an experiment can be set up to...
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    Fluid Dynamics: Pressure / Opening a hatch underwater

    Let's say that you're deep under the surface of the water in a submarine type thing. There is a hatch on the top. Let's say that the absolute pressure on the top of the hatch was calculated to be 2 atm. Inside the vessel, the pressure is only 1 atm. Someone is inside the vessel and...
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    Schools How to increase chances of getting into the college I want?

    I want to go to Caltech, but I don't know what I want to do yet. Definitely something math or science related (physics and calculus are my favorite subjects)
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    Schools How to increase chances of getting into the college I want?

    What are different ways I can increase the chance of getting into the college I want to go to? I'm in grade 11 right now.
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    Very Easy Taylor Series Approximation Help

    Homework Statement Approximate f by a Taylor polynomial with degree n at the number a. f(x) = x^(1/2) a=4 n=2 4<x<4.2 (This information may not be needed for this, there are two parts but I only need help on the first) Homework Equations Summation f^(i) (a) * (x-a)^i / i! The Attempt at...
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