Question

What is the energy of a photon corresponding to radio waves of frequency 1.475 106 /s? I got 9.77e-28 as an answer and its wrong so what is wrong with my calculations.

Answer 1

If you are keying this into a computer database, my best guess is that you don't have the right number of significant figures. The 1.475E6 has 4 so you are allowed 4 in your answer. 9.77E-28 has only 3. The unit is joules.

Answer 2

ok thanks for your help