Recent content by Daniel Wqw

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    Forced Vibations Homework: Understand Driver & Oscillator Phases

    Homework Statement Can someone please help me to make sense of this statement: When the driving frequency is much less than the natural frequency then the driver is in phase with the oscillator. When the driving frequency is much greater than the natural frequency the oscillator can't keep up...
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    Calculus Why should I read Spivak's Calculus?

    The main reason I like to learn something is because it is a bridge to solving an interesting problem of some sort. I mean I can see the purpose of learning integration because I like that it can tell you the area under a graph between two intervals and I like combinations because I can tell...
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    Calculus Why should I read Spivak's Calculus?

    I'm currently an A-Level Maths and Physics student looking to get ahead before university maths/ physics. Looking on the internet I see people making a big deal of Spivak's Calculus but on looking thought it I can't see how it could possibly be useful for future maths and physics. To me it seems...
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    Trouble with Newton's Third Law of Motion

    YES! I got it. You only resolve one objects forces, not two objects. If you resolve two objects forces the forces do cancel but if you resolve each objects forces individually then you get the right result. Ok my fault coming from an incorrect assumption you can resolve two objects forces...
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    Trouble with Newton's Third Law of Motion

    I'm sorry but I still really don't understand. Could somebody give a physical example please?
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    Trouble with Newton's Third Law of Motion

    Please forgive me for my naiveté but I've got to resolve a conceptual problem I'm having. If every action has an equal and opposite reaction then why don't all the forces in the universe cancel each other out. For example if i am in space and I hit a ball with force X then the ball reacts back...
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    What is an Exchange Particle? A-Level Physics Explained

    I really want to understand the answer to this question. Q: What is an exchange particle? A: A virtual particle that let's force act between particles in an interaction. This answer was given in my A-Level textbook but I can't for the life of me decode what it means. For example in beta minus...
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    Interpreting E=hf: Particle, Wave & Planck's Constant

    Thanks for your replies everybody, much appreciated. This has given me a lot more insight into what I'm learning about and the inspiration for learning physics to a higher level, knowing that there's something a lot deeper and more interesting at work. Thanks!
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    Interpreting E=hf: Particle, Wave & Planck's Constant

    Wow I feel brainwashed. I've always thought of the photons as particles in the sense of a bullet. I've even seen documentaries talking about photons with animations of yellow spheres gliding through the air. To be honest I'm doubtful of the truth of most of the things I'm learning in my A-Level...
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    Interpreting E=hf: Particle, Wave & Planck's Constant

    That's very interesting, thanks. Although I have to admit I don't totally follow you. I haven't really learned quantum physics in depth yet as I'm only at A-Level level (high school). But it's clarifying in a really paradoxical way because I thought there was something really obvious I'm missing...
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    Interpreting E=hf: Particle, Wave & Planck's Constant

    Thankyou very much. However I have to say that I'm still confused about the fact that in order for the E=hf equation to work you have to assume light is a stream of particles however you also assume light is a wave for you to measure the frequency. And what do you mean by light isn't a stream of...
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    Interpreting E=hf: Particle, Wave & Planck's Constant

    I know what the letters mean, E = Energy of the photon, h = Planck's constant, f = frequency of the photon. But what does it mean for a particle to have a frequency, something that I'd associate with a wave. And what can you think Planck's constant is representing? Any replies would be much...
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