Recent content by nineteen

Thank you very much! I really appreciate your help very much!

If you don't mind can you explain how solar cells and generators provide that potential difference?

The syllabus states : "Explain that the potential difference which is needed to apply across any electric circuit to flow current is supplied by an electric source". To explain this and make notes, I want to first understand what an electric source particularly is. And how all those electric...

Is it okay to assume something that isn't mentioned in the question? I mean the frictionless contact between the strip and the table?

I see, thanks for showing me the path on how to solve this, sir. After you implied, I could just have a glimpse about how the small block wouldn't need to travel so far to make the strip topple. By the way, what is your opinion on assuming that the strip would also move?

Aren't we concerning about the instance where it just starts to topple? Where the small block stays at the right edge? Isn't that instance the key to all this? I am just wondering you know.

What max distance in the sense, it is the total distance from the left edge to the right edge right?

Yeah thank you in advance. Please try to help me over here.

Yeah, I too had some confusions at the beginning, but, sir, there is friction between the small object and the strip. In fact, it is stated in the question right?

I tried to solve this problem and this is what I could come through: When the object is moving, the force acting on object is the frictional force, so, it got to be μmg. So, F = ma and as F is μmg μmg = ma μg = a So, to find out the magnitude of the initial velocity v given to the smaller...

I found the way. 5 waves in a certain time duration gives 50Hz. For the same time duration it only shows 1 beat in wave form B. Given that, after combining the 50Hz frequency and the frequency f the beats per that certain time is 1. As the equation says the beat frequency is the difference...

The correct answer is 3) 60Hz. I just want an explanation on how it became the answer.

Hey, I know the answer also, the answer is 60Hz. I just want an explanation of how it came because.

I don’t understand how to approach this. So I couldn’t make an attempt at a solution. Please help me understand better. Thank you in advance.

I heard that the speed of light doesn't depend on the wavelength or frequency of it, how does it happen? I don't understand it because the ultimate equation is c = fλ (where c is the speed of velocity of light, f is the frequency and λ is the wavelength of it...).