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In mechanics we say that net force acting on a system is zero ($\mathrm dV/\mathrm dx = 0$) in equilibrium. In a similar way, which quantity should remain constant in thermodynamics?
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The vector representation of Coulomb's law uses a vector between the position vectors of the charges at rest. However, my teacher and a few books use the convention that vector $\vec r_{21} = \vec r_1 - \vec r_2$, while other books use the convention that,
$ \vec r_{12} = \vec r_1 - \vec r_2$. Which is correct? Or can I use either convention as long as I specify which one I'm using?
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"I know that the expectation value of $x$ is $\\left\\langle \\psi \\middle| x \\middle| \\psi \\rig(...TRUNCATED) | stackexchange-physics | [-0.030223144218325615,-0.05822563171386719,-0.014078966341912746,0.028069106861948967,-0.0050630983(...TRUNCATED) | 0.071349 | 0.038944 | 0.032405 |
"If the matter around a black hole is spinning around it at nearly the speed of light, then the blue(...TRUNCATED) | stackexchange-physics | [0.005015977658331394,0.012813814915716648,-0.014792321249842644,0.00648325914517045,-0.023516338318(...TRUNCATED) | 0.073945 | 0.038568 | 0.035377 |
"Say there is a solenoid that creates a constant magnetic field in the space around it. An iron ball(...TRUNCATED) | stackexchange-physics | [0.0029386687092483044,-0.010951916687190533,-0.009378255344927311,0.013838023878633976,-0.041870851(...TRUNCATED) | 0.098155 | 0.055843 | 0.042312 |
"When current is passed through a copper wire there are circular magnetic field lines around it but (...TRUNCATED) | stackexchange-physics | [0.001916085253469646,0.015995146706700325,-0.007981184870004654,0.01953505538403988,-0.034809108823(...TRUNCATED) | 0.088122 | 0.053731 | 0.034391 |
"I need to convert this expression $ 81752 \\left( \\frac{BTU}{in^2 h ºR} \\right )$ to\n$ \\left( (...TRUNCATED) | stackexchange-physics | [-0.031144773587584496,-0.031196942552924156,-0.011496699415147305,-0.002000347478315234,0.001009955(...TRUNCATED) | 0.080212 | 0.049858 | 0.030354 |
"Every thing is matter So In which state of matter fire will be considered? I haven't get it's prope(...TRUNCATED) | stackexchange-physics | [-0.0022103735245764256,-0.0026820574421435595,-0.014129864051938057,0.007422998547554016,0.00463765(...TRUNCATED) | 0.120028 | 0.065709 | 0.054318 |
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"It is an easy exercise but I'm not seeing it. I'm asked to find the moment of inertia of two equal (...TRUNCATED) | stackexchange-physics | [0.011602567508816719,0.0018483384046703577,-0.012710929848253727,-0.02554999478161335,-0.0157220885(...TRUNCATED) | 0.082369 | 0.03781 | 0.044558 |
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