Posted by nicole on Wednesday, October 29, 2008 at 12:22pm.
First calculate the energy of one photon.
E = hc/lambda
Then knowing the total energy you can calculate the number of photons.
Related Questions
Physics Question - Pulsed lasers used in science and medicine produce very short...
Physics - A laser used to weld detached retinas emits light with a wavelength of...
chemistry - An argon ion laser puts 5 W of continuous power at a wavelength of ...
chemistry - How many photons are produced in a laser pulse of 0.324 J at 631 nm?
ap chem - How do you set this problem up? A laser emits at a wavelength 987 nm. ...
chem 115 - The first ionization energy is the energy necessary to completely ...
Physics - GIVEN: A monochromatic laser is exciting hydrogen atoms from the n=2 ...
Science ENGR - Consider a laser which emits photons with a wavelength of 1.55 ...
Physics - A helium-neon laser emits light of wavelength 633 nanometers(nm). ...
Physics !:( - A carbon dioxide laser is an infrared laser. A CO laser with a ...
For Further Reading
