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Problem 31.49 The maximum electric field strength in air is 3.0 MV/m. Stronger electric fields ionize the air and create a spark. Part A What is the maximum power that can be delivered by a 1.4-cm-diameter laser beam propagating through air? Express your answer to two significant figures and include the appropriate units. P Value W Submit My Answers Give Up Provide Fee

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- 9 Intensity, I = {to Exc = { 6Exc X C a > P = (xXx 8.85x1072 (0.77 10 43 16 )* 3x108 2 W - 1.84 x 100 106 x Answer

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