(Solution) - The 20 m radius laser ablation pit in Figure 20 28 was created -(2025 Original AI-Free Solution)

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The 20-?m-radius laser ablation pit in Figure 20-28 was created by a laser pulse with a duration of 10 ns and an energy of 2.4 mJ. Express the laser power density in units of W/cm2. Recall that 1 W 1 J/s. If the depth of the pit is 1 ?m and the density of the material is 4 g/mL, how much mass is removed by one pulse?