Perhaps this is trivial: how does one prove that the work done by a homogeneous gravitational field on a system of particles is equal to the work done on a point mass with the total mass of the system, located at the center of mass of the system.
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Why can't we use fissions products for electricity production ? As far has I know fissions products from current nuclear power plants cr...
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How can we know the order of a Feynman diagram just from the pictorial representation? Is it the number of vertices divided by 2? For exampl...
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I have searched for equations regarding craters and I came across two of them. The first one is from this NOAO website in the level two sec...
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As the title says. It is common sense that sharp things cut, but how do they work at the atomical level? Answer For organic matter, such a...
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This image from NASA illustrates drag coefficients for several shapes: It is generally accepted that some variation of the teardrop/airfoil...
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Problem Statement: Imagine a spherical ball is dropped from a height $h$, into a liquid. What is the maximum average height of the displaced...
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In most books (like Cardy's) relations between critical exponents and scaling dimensions are given, for example $$ \alpha = 2-d/y_t, \;\...
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