Physics, 18.08.2021 03:10 calvinpaul1966
A horizontal board of negligible thickness and area 4.0 m2 hangs from a spring scale that reads 60 N when a 2.0 m/s wind moves below the board. The air above the board is stationary. What does the scale read when the wind stops? The density of air is 1.25 kg/m^3?
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A horizontal board of negligible thickness and area 4.0 m2 hangs from a spring scale that reads 60 N...
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