How do you calculate the energy of a photon of radiation with a frequency of #8.5 times 10^14# #Hz#?

1 Answer
A.Raz · Stefan V.
Apr 9, 2017

Answer rounded according to 2 sig figs: #5.6 xx 10^-19"J"#

Explanation:

#E= h xx f#

  • #E# is energy in joules
  • #h#is Planck's constant # = 6.626 xx 10^-34("m"^2"kg")/"s"#
  • #f# is frequency, in #"Hz"# or #"s"^(-1)#

So

#E= 6.626 xx 10^-34 ("m"^2 "kg")/"s" xx (8.5 xx 10^14)"s"^(-1)#

#E= 5.6321 xx 10^-19" J"#

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