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(a) What is the intensity in W/m2 of a laser beam used to burn away cancerous tissue that, when 88.0% absorbed, puts 510 J of

(a) What is the intensity in W/m2 of a laser beam used to burn away cancerous tissue that, when 88.0% absorbed, puts 510 J of energy into a circular spot 2.30 mm in diameter in 4.00 s? 451*10\"? 'i x W/m2

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