Electromagnetic radiation with a wavelength of 665 nm appears as orange light to the human eye. The energy of one photon of this light is __________ J.

Answer 1

E = h*c/L

where E is the energy, h is planck's constant, c is the speed of light, and L is the wavelength.Wavelength is measure in meters, so convert 665nm to meters. I think it's 6.65*10^-7

E=(6.626*10^-34 * 3*10^8)/6.65*10^-7

I think that is how you work that one.

Answer 2

2.99*10^-19