John Rennie
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179,617
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 1d reviewed Leave Open Propagator in AdS 1d reviewed Leave Open Can you have a problem with a Dirichlet boundary condition but with waves that reflect off the boundary? 1d reviewed Leave Open What is the smallest practical milliKelvin temperature sensor or technique? 1d reviewed Close What does a particle's path look like in a region with both magnetic and electric fields that are perpendicular? 1d reviewed Leave Open CNOT Gate for quantum systems 1d reviewed Close Ampers Law and a flat 1d comment Ampers Law and a flat Hi and welcome to the Physics SE! Please note that this is not a homework help site. Please see this Meta post on asking homework questions and this Meta post for "check my work" problems. 1d revised Amper`s Law and a flat edited tags 1d reviewed Approve Correction for uncertainty of multiplications and divisions 1d comment What is more fundamental: Geometry and Topology or physical matter? This question dates back to Einstein himself (allegedly - whether he actually said the notorious wood vs marble quote seems unclear). There was no answer then and there is no answer now. 1d revised RLC Circuit Resonant Frequency edited tags 1d comment RLC Circuit Resonant Frequency Hi Ayman and welcome to the Physics SE! Please note that this is not a homework help site. Please see this Meta post on asking homework questions and this Meta post for "check my work" problems. 1d comment electron in magnetic and electric field Using vector addition, yes. It isn't obvious from your diagram what the direction of $\mathbf E$ is. 1d reviewed No Action Needed Tight-binding model of graphene - filling in a few steps 1d comment electron in magnetic and electric field Am I missing something? Don't you just add the two forces (vector addition) to get a total force $\mathbf F$ then use $\mathbf F = m \mathbf a$? 1d reviewed No Action Needed Can't identify static and kinetic friction regions 1d comment Gauss's law in three parallel plates Hi and welcome to the Physics SE! Please note that this is not a homework help site. Please see this Meta post on asking homework questions and this Meta post for "check my work" problems. 1d reviewed Close Rate of Ice Formation 1d revised Rate of Ice Formation edited tags 1d comment Rate of Ice Formation Hi and welcome to the Physics SE! Please note that this is not a homework help site. Please see this Meta post on asking homework questions and this Meta post for "check my work" problems.