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Homework Help: How to get to GPa?

  1. Feb 26, 2009 #1

    I have calculated the young modulus of a system by calculating the second derivate of the energy against the axial strain and then I devided the result on the volum.

    The unit of the energy is eV and the volume is in angstrom^3. I want to calculate the young modulus in GPa, should I consider a coefficient? how could I get to GPa out of [eV/(angS^3)] ?

  2. jcsd
  3. Feb 27, 2009 #2


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    convert to SI

    Hi saray1360! :smile:

    Pa is an SI unit, so you need to convert everything else to SI units first.

    angstrom is easy :biggrin: … but eV is totally non-SI, so you'll need to find the factor to convert it to joules. :wink:
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