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So I'm in year 10 (9th grade for the Americans) and I just had a question about physics. What is the difference between atoms, particles and matter? Are they all...
Asked on 10/17/2020 by JamesM
2 answerSidney coleman in his lecture 253a of QFT stated that " one-meson-to-one-meson S-matrix element, we should find it equal to 1" i.e $$langle p'|S|prangle = (2pi)^32E_pdelta^{(3)}(vec{p}'-vec{p})tag{1}$$ for the scalar...
Asked on 10/17/2020
0 answerI am currently creating a 2D ideal gas simulator whereby the user can determine three of the four variables (P, V, n, T) and the gas would adjust accordingly. I...
Asked on 10/17/2020 by nomnom123
1 answerWhat aerodynamic effects actually contribute to producing the lift on an airplane? I know there's a common belief that lift comes from the Bernoulli effect, where air moving over the...
Asked on 10/17/2020 by David Z
15 answerThe following problem is taken from Exercise 1.7 in David Morin's "Special Relativity: For the Enthusiastic Beginner":A train and a tunnel both have proper length L. The train moves toward...
Asked on 10/16/2020 by YuiTo Cheng
2 answerWith the 2020 Nobel Prize in physics being awarded for the proof and discovery of supermassive black holes, I started doing some research and came across the star closest to...
Asked on 10/16/2020 by Mape
1 answerMy understanding is that s and p polarisation of light will have a different angle when diffracted by diffraction gratings. In wikipedia it says that "According to the Huygens–Fresnel principle,...
Asked on 10/16/2020 by Sank
0 answerNewton's second law of motion states that $F=frac{d(mv)}{dt}$. This is a first-order differential equation, in which the order of differentiation of momentum is 1. So we can write it $F=frac{d^k(mv)}{dt^k}$...
Asked on 10/16/2020 by Harry Macpherson
2 answerI would like to know how to analyze the dynamics of a ball on a curved surface (lower part of a sphere), which can move in the xy plane. To...
Asked on 10/15/2020 by Rav
0 answerI am not confused with difference between Young's double slit experiment and diffraction. In Young's double slit experiment, the interference pattern is bright fringes separated evenly with separation given by...
Asked on 10/15/2020 by phyphyphy
2 answerGet help from others!
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