Question

How many photons with a wavelength of 450 nm is required to have mass of 1.25 micrograms?

Answer 1

I didn't know photons had a mass. What does violet light weigh? or red light?

Answer 2

I know, I don't understand. I don't know violet light or red light either, we haven't learned mass of those.

Answer 3

Explain why you would make one of the addendds a tens number when solving an addiction problem