Recent content by Nemika

The initial question was a multiple choice correct and the correct options were, that the moving electrons (in the beam)- a) initially experience a force of mutual repulsion b) experience a force of mutual attraction after traveling a certain distance. How could the second option be possibly...

Thanks for the reply. I have studied about crt's working previously but I'm confused in this case since there wasn't any external magnetic field mentioned. How would the beam expand or contract if it's only accelerated by an electric field?

If a beam of electrons starts to accelerate from rest due to a uniform electric field in vacuum will the electrons feel any mutual repulsion or attraction? Will the beam first expand then contract? If yes, how does this happen? This was a question under magnetism head.

*Both .999… and 9.999… are finite numbers; i.e., strictly less than infinity.* How can you call 0.999... or 9.999... as finite? If these are finite then infinity can also be considered finite!

OK let's forget about any guitars. If there are two sounds with same frequency and same pitch and everything else is also same then their timbre also has to be same if they are being produced from identical sources or same source. Or else every single sound produced in this universe is unique.

I said already the guitars were identical so the material of the strings would also be same.

OK, one last time What if the same person plays the same notes on both these instruments (without any human error) will they differ. I mean is there any property other than pitch and amplitude due to which quality (timber) of sound will be different.

By saying quality I meant timbre. And if amplitude and frequency is same does that mean timbre will be same if the sound is played on identical instruments?

It's a very simple question but still, When two identical guitars are played day two persons to give notes of the same pitch, will they differ in quality? Please specify with reason. Thanks for the replies.

I haven't read all the posts nor I am an expert but if we think in this way that water is a strange liquid. 1. It expands anomalously and therefore the Mpemba effect might be correct. 2. On freezing, water molecules arrange themselves in hexagonal structures with hollow space in between them. I...

Thnx for the replies and now I know that the Earth does move a little bit. But I meant to say that is it totally possible that the apple was completely stationary and it was the Earth which accelerated towards it and finally collided with it (though the impact on Earth would be very less)...

But how does this happen? How can a tiny apple generate enough force to move "up" earth even a little?

This is a really silly question though... Newton said that the apple fell on the ground due to gravity but can we say that the Earth rose upwards to touch the apple. Is it possible to prove this by any physics law? Thnx for any reply.

Thanx for clearing my doubt.

So does this circuit takes these electrons back to the electron gun or are they earthed(I found the second one on a website).