Stories and questions with this tag.
Doing the Gauss law applications for boards + NEET and I've hit something that feels inconsistent. For an infinite plane sheet of charge with surface density \sigma , I use a pillbox through the sheet and get 2EA = \sigm
Strings, pipes and beats are the core. A calm approach to the sign choices, plus an honest word about Doppler and the syllabus.
Every time I solve a Doppler question I do 50% by guess on the signs. In my head I have: f' = f\,\frac{v \pm v o}{v \mp v s} and I don't have a rule for which one is plus. The textbook example I tried: a source of freque
Same first law, different sign conventions, different kinds of questions. Where do the Physics and Chemistry versions overlap, and where do they split?
Boards + NEET so I need this clean. NCERT gives e = NBA\omega\sin\omega t for a coil of N turns, area A, rotating at angular speed ω in a field B. I did a numerical: coil 50 turns, area 0.02 m², B = 0.4 T, rotating at 30
Hostel wifi lagged at 1am and I fell into a rabbit hole. Here's what really happens between tapping a link and seeing a page.
It's 1 am again and my brain won't switch off, so doubt time sorry in advance . Current Electricity. NCERT says free electrons move randomly at speeds of order 10^5 – 10^6 m/s but the drift velocity in a copper wire carr
I made a colour-coded summary but the resonance part doesn't add up.
The chapter looks gentle, yet marks leak through sign slips, missing factors and mixed units. What does it deserve, and where do the slips come from?
Revising Magnetism and Matter without paying for any extra test series, just NCERT + PYQs, so I want the basics to stick. For a short bar magnet with magnetic moment m , NCERT gives at a distance r much larger than the l
Biology goes fine, Chemistry is okay, then Physics eats the clock and the confidence. A step-by-step plan for the section most students dread.
Back from football practice and my brain is still stuck on this. Take three vessels with the same base area, one a narrow straight tube, one a wide jar, one a conical flask with the base the same size. Fill all with the
