A dimensional analysis problem.

  • Thread starter lylos
  • Start date
  • #1
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Homework Statement


Basically, I have a constant that is 1/mass. I need to find out how to relate this to my function which has units eV/A^2 to have results in THz^2.


Homework Equations





The Attempt at a Solution


I think I would just have the mass in units of MeV/c^2 and then convert c^2 into A^2/s^2... Does this sound correct?
 

Answers and Replies

  • #2
Redbelly98
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I think that will work, since A seems to be a length unit (Angstroms?) from what you say.

Let's see ... reciprocal of mass in your units would be c^2/eV, so:

[tex]
\frac{c^2}{eV} \cdot \frac{eV}{A^2}
= \frac{A^2}{s^2 \cdot eV} \cdot \frac{eV}{A^2}
= \frac{1}{s^2}
= Hz^2
[/tex]
 
  • #3
79
0
I think that will work, since A seems to be a length unit (Angstroms?) from what you say.

Let's see ... reciprocal of mass in your units would be c^2/eV, so:

[tex]
\frac{c^2}{eV} \cdot \frac{eV}{A^2}
= \frac{A^2}{s^2 \cdot eV} \cdot \frac{eV}{A^2}
= \frac{1}{s^2}
= Hz^2
[/tex]
Yeah, it was Angstroms. That's what I was thinking it would be, was just wanting to run it through with someone else before I started over again. Thanks. :)
 

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