Problem Solving Strategies

the solution matches!

@NOTEBook But the good thing about having made that mistake is now you'll remember it!

@SamyakMarathe No-one enjoys the JEE preparation. Every student I've chatted to here finds it depressing. This probably doesn't make you feel better, but maybe it's some comfort that you are not alone.

@PinkAura The best reason for doing something is that you will enjoy it. If you think it will be fun then I'd say go for it..

@PrateekMourya I have no immediate plans to stop :-)

We know the total resistance between A and B is ¹⁄₂R. Yes?

Yes, I think the advanced is less about just memorising facts and more about reasoning.

If all I have to do is listen to you solving it yourself that's still a perfectly good use of my time :-)

"Intuition" is a funny thing. Really it just means "what we're used to".

It's simpler than you think.

You're welcome :-)

Physics is maths

physicsbrawl.org

So m = -³⁄₂

@JohnRennie Thank you so much and all others for helping me out...I got into IIT Hyderabad finally...

It's traditional in the UK to say "Break a leg!".

Zones II and III are isolated so no charge can flow in or out.

Oh so 5q/ ## epsilon_0## would be flux in the whole 4π angle

You can imagine a cone with the apex at the +5q charge and the axis along the line between the two charges, and the solid angle subtended by the cone is ⁴⁄₅𝜋, then all the field lines inside the cone go to the -q charge.

@satan29 When the hardest part of a question is figuring out what the examiner had been smoking when they set it, that's usually an indication it is not a good question :-)

Now we think quantum mechanics is true because so far it has never been disproved, but quantum mechanics is less than a hundred years old. Give it another two hundred years and who knows?

The JEE preparation is such a traumatic process that I think once it's past students tend to want to forget about it.

When a chemist writes dU = dq + dw the "dw" means: the work done on the system

It will follow a circle only if mv²/r ≥ mg cosθ everywhere around the circle, where θ is the angle to the vertical.

Undelete McAfee. Then burn the installation media. Then throw the ashes down the toilet.

I did see Steven Hawking when I was a student, but I only saw him at a distance. I didn't speak to him.

No. When physicist writes dU = dq - dw the "dw" means: the work done by the system

In the UK it's traditional to say "Break a leg!"

@PrateekMourya maybe in 40 years when you're retired as well :-)

I'll be 60 in February.

@satan29 congratulations, you are the millionth student to ask this :-)

Ah. I still have the copy of Hecht's book that I used in 1980 :-)

We don't like homework questions on the main site, but in the chat rooms they are fine.

@robertpatrick hi, yes you can ask JEE questions here.

Most of us don't worry too much about what entropy really is. We just use the equations for the change in entropy and carry on with our lives. I recommend this approach :-)

wonderwall equation :-) That's one hell of a phone autocorrect error :-)

(I didn't have a GIF of a woman so I drew a confused JEE student :-)

And even though it's a terrible thing to say, the way you get a good rank in the JEE isn't by being great at physics, it's by being great at answering JEE questions.

"Why" questions are always tricky in physics. Quantum field theory gives us a way to calculate how charges interact, but once you start asking yes, but what really happens? we're moving away from physics and towards philosophy.

Verma must have copied from me :-)

its so poorly written....I just can't stop raging whenever I hear NCERT

And I quite enjoy solving some of the problems as they are surprisingly hard.

@PrateekMourya I'm retired and I have a lot of free time to fill.

calc during JEE is a pain..

Happy New Year IST

Happy diwali to Everyone

@Ishwaran You're always welcome to ask questions here :-)

@AshishAhuja see if this can help u: drive.google.com/drive/folders/…