What is the energy of a photon traveling with a wavelength of 0.02m?

Answer 1

E = hc/w
h = Plancks constant
c = speed of light.
w = wave length

E = (6.6 x 10^-34 x 2.99 x 10^8) /0.02 = 9.8 x 10^-24 J

Be sure to check my math :)

Answer 2

First you need the frequency of the photon. Use the equation:

c = (wavelength)(frequency) and solve for frequency.
where c= speed of light (3.0 meters/sec)

Then you can use E = h(frequency) to calculate the energy
where h = Planck's constant 6.626 x 10^-34 joule-sec.

Your answer will be in joules