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HNQ
12:09 AM
2
Q: Derivation of the catenary equation

David SI’ve seen two derivations of the catenary equation: one involving Lagrange multipliers and another using a balance of forces on a segment of the cable/rope. I’m trying to derive the catenary equation by minimizing the potential energy of the cable, which is: $$U=\mu g \int_{x_1}^{x_2}y(x) \sqrt{1...

 
 
5 hours later…
HNQ
4:59 AM
2
Q: Why is the mass of a Hydrogen atom lower than the sum of masses its parts?

ChandrahasI understand that when the electron and proton are arranged to form a hydrogen atom, the potential energy of the system is lower than when separated. As a result, according to mass-energy equivalence, the mass of the hydrogen atom is lower. However, my question is about the physical process throu...

 
 
6 hours later…
HNQ
11:25 AM
1
Q: Time quantization

Blue5000There is no evidence to support that time is quantized. So wouldn't the use of discrete values like $dt$ in calculus suggest time is quantized and comes in discrete durations of $dt$?

 
 
10 hours later…
HNQ
9:29 PM
1
Q: Conservation of energy in quantum tunneling

doidaoBy this question, a particle can tunnel to inside a potential barrier. One aspect of this process that was not addressed in the answers was the conservation of energy. Motivated by this question, I am under the impression that having a particle inside a potential barrier would make for a higher e...

 

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