Change in momentum


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Maldonado3K
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Joined: Fri Sep 29, 2017 7:07 am

Change in momentum

Postby Maldonado3K » Sun Apr 22, 2018 11:51 pm

If not given will we always have to us the equation with the greater (>) sign to find the change in momentum? or can we just use p=mv. Are they the same?

Chem_Mod
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Re: Change in momentum

Postby Chem_Mod » Mon Apr 23, 2018 3:08 pm

First, keep in mind that for Heisenberg's uncertainty principle, means "indeterminacy in" or "Uncertainty in" NOT "change in". Generally, questions will ask for the minimum uncertainty, and so an equal sign can be used. But the formula itself does use a sign.

AnthonyDis1A
Posts: 30
Joined: Fri Apr 06, 2018 11:05 am

Re: Change in momentum

Postby AnthonyDis1A » Sun Apr 29, 2018 5:17 pm

What does "minimum uncertainty" mean conceptually? Mathematically it's the minimum product of a particle's position and momentum, but what's the point in knowing an electron's minimum uncertainty?

Chem_Mod
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Re: Change in momentum

Postby Chem_Mod » Sun Apr 29, 2018 5:54 pm

It starts to matter as we research more into phenomenon of quantum mechanics and find uses for quantum mechanic application. This criterion sets a limitation to which scientists can achieve accuracy and applies to all other objects, not just electrons.


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