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Home Q & A Board Science-Related Homework Help Physics
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Chery Chery
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7 years ago Edited: 2 years ago, bio_man
A laser emits a pulse of light that lasts 10 ns. The light has a wavelength of 690 nm, and each pulse has an energy of 480 mJ. How many photons are emitted in each pulse? (c = 3.0 × 108 m/s, h = 6.626 × 10-34 J ∙ s)

3.1 × 1043

2.6 × 1037

1.7 × 1018

2.1 × 1027
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College Physics

College Physics


Edition: 1st
Authors:
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HotMathHotMath
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7 years ago
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Chery Author
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#2
7 years ago
You're right again!

Appreciate it
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