|"how would you use a barometer to measure the height of a building?" (one ans: drop it and see how long before it hits, height = 1/2gt^2)
The problem with this question is that you didn't mention to the candidate that they are also in posession of a watch. Of course, they can still attempt the elegant and accurate "one-mississippi, two-mississippi, three-mississippi" solution.
Anyway, wouldn't a barometer be useful in mesuring a building's height, since there would be a relative pressure difference between top and bottom? I'm sure a formula could be worked out...
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