Recent content by Aichuk

So the first question is: A student standing on the platform of a railway station notices the first two carriages of an arriving train pass her in 2.0 s and the next two in 2.4 s. The train is decelerating uniformly. Each carriage is 20 m long. When the train stops, the student is opposite the...

Umm, so as far as I understand velocity is speed in a direction. So if I'm going North at X Km/h and another guy goes south, he'll go at -X Km/h. So anyways, the formula for relative velocity, for example V(AB) is V(A)-V(B). So let's say two trucks are going at 70 m/s towards each other...

Now let's say I push a box. The box will accelerate (before stopping due to friction). But when I push the box the box 'pushes' me too. I heard that acceleration occurs only when there is a force imbalance. But if the two forces are equal, then how could this cause an acceleration? Please...

Yeah but why doesn't it make an AC current. If it's rotating in one direction, then won't it just create a DC?

Oh right I'm so sorry, I mistakenly wrote transformers when I wanted to write generators.

So I was just reading on generators. The basics that I've understood is that it works by inducing a current through motion of a coil on a magnetic field. So what I didn't understand was that it produces an alternate current through full 360` rotation. In a half cycle, it induces a current in one...

No, I'm not asking what language to learn, etc. I started learning python last year and i was wrapping my head around the basic concepts and even making some nifty programs. However, one day I just got frustrated and gave up. I know frustration is common but I felt very stupid while...

Darn.

The article was good but I'm only 15 and didn't get the maths so I understood even less than usual.

I'm not talking about the Uncertainty Principle. I'm just talking about the entire branch in general :/

Like I was reading Stephen Hawking and while I found quantum physics interesting, I had trouble truly understand it. I mean I know it's the study of very small particles and stuff like you cannot predict where an electron is if the more you know its velocity but I had trouble understand the why...

My textbook contains examples of HOW to use, but not WHY

Your replies made me realize all the holes in my calculus knowledge. I've been taught calculus in school just through formulas so it looks like my concepts are very weak. I have no idea what to do about it because my textbook also only uses formulas.

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Oh my god, I'm in the exact same position. My teacher taught me only the formulas but I don't know why they happen. I want to study engineering later on, will I suffer due to this?