# Recent content by Kaneki123

1. ### A Question about Torque....

I thank you all for your help....Much appreciated...
2. ### A Question about Torque....

Heres the picuture...I apologize for inconvenience
3. ### A Question about Torque....

Okay...I have a question.In the case described in the picture, the medium between the two forces, which would normally cause stationary or uniform circular motion, is not straight..The moment arm of each force is equal, and the forces are also equal...Now my question is, would the sum of torques...
4. ### B A Question about Charging by Conduction

When we simply touch a negatively charged metal rod with a neutral metal rod, the charge distributes itself over the both surfaces...I am asking if this is possible in my case???
5. ### B A Question about Charging by Conduction

Okay...Is it possible to charge a metal, by conduction, using only a single terminal of a battery???...Like it we touch only the negative terminal with the metal, is it going to get a negative charge??...If not, then why???
6. ### A Question about potential difference in Wire

Okay...I got a question. Charges move in a wire due to an electric field across its ends. Now, positive test charge in an electric field would have higher electric potential nearer to the positive plate than anywhere else. Now in case of a circuit, like the one I have drawn, the electric...
7. ### B A Question about Energy conversion...

Okay...Suppose we we lift up something from the ground upto a certain height. By doing so, we have imparted it some potential energy. If we now let go, it will start converting its potential energy to kinetic energy.Now, suppose we apply this analogy to the case of a positive charge place nearer...
8. ### B A Question about Effect of Surface Area on Loudness

This is the diagram
9. ### B A Question about Effect of Surface Area on Loudness

Okay... I have a question about "effect of surface area on loudness".I am going to upload a diagram along this post.It shows two scenarios. The "red thing" is a barrier, which allows absolutely no air contact between the speaker and the listener. So the only way the sound can travel outside is...
10. ### A Question relating to Loudness and Transmission of Sound

I have another question closely related to this topic. So I am going to post it in the same thread.I am going to upload a diagram along this post.It shows two scenarios. My question is simple, is the sound from the speaker going to be louder for the listener in the second case (the case with the...
11. ### A Question relating to Loudness and Transmission of Sound

Well, I was thinking that when it is a single solid wall, any loss in amplitude of wave would be due to Boudary Behaviour (reflection and transmission) at the entry point from this face of wall and exit point from the other face of wall.( If we do not take Inverse-Square Law into consideration...
12. ### A Question relating to Loudness and Transmission of Sound

Okay...I have a question and I am going to describe it using a scenario...Suppose there are two persons in two different but adjacent rooms. The wall in-between these rooms is 3 inches thick. There is absolutely no way for air to cross between the rooms. Now, one of the persons speaks and the...
13. ### A Question about Sound Waves Propagating Through a Large Metal Cube

Well, most of my confusion has been resolved. But I do have one last question. As you said "The displacement of the steel surface is very small and doesn't couple sound into the air very well". The sound can be heard if one is right next to the "distant train". The reason is that the wheels of...
14. ### A Question about Sound Waves Propagating Through a Large Metal Cube

Well I dont think so that my question indicated that I was hung up on the shape. In your case, You had to press your ear against the track in order to hear. But what if you were standing at some distance from the tracks. Now, you could not hear the wheels. Now, the only way which I can think of...
15. ### A Question about Sound Waves Propagating Through a Large Metal Cube

Well, if we are gonna talk about "which sound reaches first", then the sound through the cube will reach first. But I actually wanted an answer about whether the sound propagating through the cube will have enough amplitude left when it reaches the end B, when some of its amplitude is decreased...