Why Do Objects Move? | Molecule Physics

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In summary: Work done at the instant of Push and the block will then compress and expand w/ simple harmonic motion about its original position with a total KE that is the same as the Work done during the Push.Thanks for the answer.But, when I push the block some of the energy that my hand supplies surely creates vibrations in it.Why not all of the energy from my hand is used in increasing the vibrations of the molecules of the block rather than moving it. (if some why not all)In summary, when pushing a wooden block, not all of the energy provided by a push contributes to the degrees of freedom of the molecules of the wood. This is due to the repulsion between your hand and
  • #36
What is the underlying reason that the solution in case of solids produces a continuum of levels?

In other words, what is the law that dictates that when many electrons/charged particles/nuclei come together--- the discreteness has to go away.So, surprise is very much there.
 
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  • #37
Deepak K Kapur said:
What is the underlying reason that the solution in case of solids produces a continuum of levels?

So, surprise is very much there
Do you have any idea about the solution to the Schrodinger wave equation? For a Hydrogen atom, it gives a very limited number of energy levels that the system can occupy. Consider the levels, crudely, as being related to the separation (physically) of an electron (particle) and a Proton (particle), which can only take certain values because of the wavelike nature of the particles. Now consider many more nearby charges - electrons and protons. Each one will contribute to the net energy level of any particular electron - spreading the possible values of the actual levels about what you would have expected for an H atom. That cannot really be surprising. Even adding another H atom to form an H2 molecule alters the levels in both atoms so how much more combinations could you expect with millions of nearby atoms in a solid that are close enough to affect each electron.
Rather than being "surprised" why not read up about it and then you will be less surprised that there are things there that you don't yet know. Physics is full of them - for all of us. Do not rely on what you are reading on this thread. Be an active learner and limit the Q and A method, which is highly inefficient.
 
  • #38
Not arguing...

Surprise has to be there.

What is the reason for attraction of positive and negative charges that they lead to continuum of bands when present in large numbers ---- a surprise.

If you say conditions in the Big Bang decided/produced positive and negative charges and their attraction ...what is the reason for the Big Bang ---- a big surprise.

You can't do away with surprise
 
  • #39
Deepak K Kapur said:
You can't do away with surprise
That's certainly true - but you can avoid a whole lot of surprises if you do your homework. :smile:
 
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