When the wind is blowing, what is the difference between the air pressure at the crest and at the trough of an ocean wave due to the Bernoulli effect?

How much heavier is a 100-page printed document than 100 blank pages? (Thanks to Emily Kandel of Scarsdale, NY, for suggesting the question.)

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Question suggestions are always welcome!

For more Fermi questions and answers, see Guesstimation 2.0: Solving Today’s Problems on the Back of a Napkin, by Lawrence Weinstein (Princeton University Press, 2012).

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