Question: A 2 . 3 1 0 1 4 Hz laser emits a 8 . 3 s pulse, 5 . 0 mm in diameter, with a

A 2.31014 Hz laser emits a 8.3 s pulse, 5.0 mm in diameter, with a beam energy density of 0.45 J/m3. The number of wavelengths in the length of the beam is closest to:

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