ACuriousMind
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 22m reviewed Leave Closed light has no mass but yet has momentum,what of radioactive particles 2h comment Maximum uncertainty in position of ground state in infinite square well Ask yourself: What would a $\Delta x > L/2$ mean for a particle confined to a box of width $L$? 3h revised Solve for emf in the circuit edited tags 4h revised Where is the net electric field 0? edited tags 5h revised Force Of Attraction between 2 rings edited tags 9h comment Explain quality factor and bandwidth I'm voting to close this question as off-topic because it shows no research effort. 9h comment Path integral (sum over paths where $v>c$) The path integral is a formal integral over all paths in the mathematical sense. It is not an integral over "physical" paths, and the "reason" we integrate like that is simply that that is the correct integral to produce the quantities we want to compute, see any of the standard derivations of the path integral. I'm not sure what you're asking. 9h comment Entropy for $N$ number of particles Please note that check-my-work questions are off-topic. 9h comment Einstein and his idea about infinite electricity @AccidentalFourierTransform: We don't migrate crap. 9h comment Einstein and his idea about infinite electricity What does "infinite electricity" even mean? 9h reviewed No Action Needed Increase in entropy principle 9h reviewed Reviewed How to calculate impulse required to move an object vertically upward by given distance 9h comment How to calculate impulse required to move an object vertically upward by given distance Well, what you take as the duration of the momentary force really depends on what kind of force you're thinking about - I'm not sure how we can help here withoutfurther information. 9h revised How to calculate impulse required to move an object vertically upward by given distance added 5 characters in body; edited tags 9h reviewed Reviewed 2nd law of thermodynamics - simple steam power plant problem 9h comment 2nd law of thermodynamics - simple steam power plant problem Hi and welcome to Physics.SE! Please note that you can type formulae with MathJax here, and that we are not a homework help site. 9h revised 2nd law of thermodynamics - simple steam power plant problem added 8 characters in body; edited tags 9h reviewed No Action Needed Cosmic Rest Frame 9h reviewed Close Why an object with double length have the same friction? 9h comment Why an object with double length have the same friction? Well, might you explain what exactly you didn't get about the highlighted part? Also, please include quotes as actual text, not as pictures.