Recent content by shingetsunohimitsu

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    Is the Expansion of the Universe Leading to Heat Death?

    I have been reading the archives of Physics Forums, some threads about the expansion of the universe and also the upcoming Heat Death that people keep talking about. However, there are a few things that keep bugging me: First of all, atoms have not so far shown any tendency not to cluster...
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    What are your rights when interacting with the police?

    In Sweden there have been quite a few cases where the police have just randomly shot a guy and then claimed "he was hysteric" or some other bad excuse. Like recently, a guy who was allegedly "with a knife and totally out of control" was shot in the chest and died because of police violence. The...
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    Best science fiction- your suggestions

    No one seems to have noticed that Larry Niven really is a pervert! I liked his books, but he could have cut down on all the sex; it really just becomes absurd, even though he's trying to... I don't know... I guess I'm just one of the people who easily gets embarrassed. I would recommend...
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    The Latest in Fusion Reactor Research: Breakthroughs & Challenges

    How far is research really gone? Is there any major breakthrough on its way? Are the first prototypes ready yet? I'm making a project work on this for school, and I find it hard to find sufficient information in books and likes about this, since clearly, books from the beginning of the last...
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    Carnot Engine - Carnot Refrigerator

    This is just a common problem solving question, which I cannot make, I suspect because I'm bad at maths. Anyway, I want to see it done, hopefully to grasp it. I am doing physics, so, it's an exercise from one of my books. 18-11. Show that the efficiency e of a Carnot engine and the...
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    Can the Surface Integral of a Zero Divergence Electric Field Be Non-Zero?

    Would anyone mind explaining to a beginner what the divergence theorem is? I'm completely beginner at physics at this level, me being too young to enter university as yet, but hopefully it's not to dreary a question.
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    Solve Angle Between Light Rays After Prism Refraction - Help (with prism)

    Help 34-31. The prism of the figure has a refractive index of 1.48, and the angles A are 30.0°. Two light rays m and n are parallel as they enter the prism. What is the angle between them after they emerge? I. Set the hypotenuse of the small triangle to the left at 10cm. Gives you a triangle...
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