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Energy-momentum $T_{00}$ component for a scalar field in 2-dimensional spacetime

How to determine $x$ component of angular momentum of a system of 3 particles with spin $1/2$?

Resources on understanding the Orchestrated objective reduction

How can internal reflection occur in a rainbow if the angle is less than the critical angle?

How natural is the number $e$?

An object with mass $m$ thrown with speed $v_0$. There is gravity and air resistance. Find the speed of the object right before it falls on the ground

Measuring conserved charges of gauge bosons with conserved charge operators

What happens to an atom when it gets sucked into a black hole?

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Are the temperature coefficients used for resistance in electricity and length in mechanics the same?

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Diagonalizing eigensystem to find normal modes of coupled oscillator

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