1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: What is the frequency of a photon of energy 58eV?

  1. Jun 5, 2008 #1
    1. The problem statement, all variables and given/known data

    What is the frequency of a photon of energy 58eV?

    2. Relevant equations


    where H is Planck's constant, 6.63x10^-34

    3. The attempt at a solution

    58/ (6.63x10^-34) = 8.75e34

    that is not correct.

    Do i have the energy eV into a certain unit?
  2. jcsd
  3. Jun 5, 2008 #2


    User Avatar
    Homework Helper

    Hint: 1eV = 1.602E-19 J
  4. Jun 5, 2008 #3


    User Avatar
    Staff Emeritus
    Science Advisor
    Homework Helper

    When in doubt, put everything in units of MKS (meters, seconds, and kg).

    MKS energy unit is the Joule = kg * m^2 / s^2
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook