Calculate the energy (in Joules) of a single photon of blue light with a frequency of 7.50 × 10¹⁴ Hz. (h = 6.626 × 10⁻³⁴ J • s)

Answer 1

Hi, Emi! For this problem, you'll need to remember the equation: E=hc/λ, where h is Planck's constant (6.626E-34 Js), c is the speed of light (3.0E8 m/s), and λ is the wavelength. Seconds will cancel out by simply plugging everything in to the equation, but you'll need to convert Hz to m to cancel out m and be left with Joules. Once you plug the converted value in to the equation, you should get the energy in Joules.