PeroK's latest activity
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PeroK reacted to Ibix's post in the thread How to increase phone signal strength by lying about it with
Like.
"Mate, your signal strength is always better than mine. What network are you with?" -
An easier way to approach the problem you're working, which is to find ##\sqrt i##, is to think in terms of the polar form of i, which...
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Please provide links or references. As I pointed out in post #10, there is at least one site that shows repulsion (option b) as the...
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PeroK replied to the thread Coulomb's force vs the Lorentz force.You must forgive the heresy here at Physics Forums, where we call into question the infallability of the 12th Physics CBSE Board!
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According to the marking scheme for this question paper (This is from 12th Physics CBSE Board 2023) the correct answer is option (b).
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Just out of interest, I asked Google AI what was the theme of the novel The Great Gatsby. This is what it said: The main theme of The...
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PeroK replied to the thread Coulomb's force vs the Lorentz force.From what I've seen, there are a lot of bad questions out there now. And a lot of wrong explanations. The common theme seems to be...
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This is the exact question. This question probably was prompted to around a million students two years back. Anyways, with reference to...
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Beams of electrons and protons move parallel to each other in the same direction. They ______. a. attract each other. b. repel each...
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PeroK replied to the thread Coulomb's force vs the Lorentz force.Trivially, if the speeds are ##u > v##, then (in the non-relativistic approximation), there is a frame where the speeds are ##\frac{u -...
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There is a nice little variation of the problem. The host says, after you have chosen the door, that you can change your guess, but to...
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To muddy the waters some more, here is one of the many sites that feature this question...
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PeroK replied to the thread Coulomb's force vs the Lorentz force.If they move with the same velocity in the "lab" frame, then the frame in which they move with the same velocity in opposite directions...
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PeroK replied to the thread Coulomb's force vs the Lorentz force.This question can be understood without relativity by considering a reference frame in which the beams move at the same speed in...
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PeroK replied to the thread Coulomb's force vs the Lorentz force.Speed is frame dependent. Take the case where the speeds are equal and consider the frame where that speed is zero. Now we have two...
