A particular species of copepod, a small marine crustacean, emits a flash of light consisting of...
A particular species of copepod, a small marine crustacean, emits a flash of light consisting of 1.4×1010 photons at a wavelength of 490 nm. The flash lasts for 2.4 s.
What is the power of the flash?
Homework Answers
Energy emitted = N*h*c/lamda
= 1.4*10^10*6.625*10^-34*3*10^8/(490*10^-9)
= 5.68*10^-9 J
power of the flash = energy emiited/time
= 5.68*10^-9/2.4
= 2.37*10^-9 W
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