Question: Lasers can be used to drill or cut material. One such laser generates a series of high-power pulses of light. Each pulse contains (500 mathrm{~mJ})

Lasers can be used to drill or cut material. One such laser generates a series of high-power pulses of light. Each pulse contains $500 \mathrm{~mJ}$ of energy and lasts $10 \mathrm{~ns}$. A lens focuses the light to a 10- $\mu \mathrm{m}$-diameter circle. What is the light intensity during the pulse?

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